Move HTMLFormField subclasses to a separate directory

It's getting more difficult to navigate the files in includes/htmlform/
with every new field and every new helper class that is being added.

Change-Id: I92ce2356baf6151f17b2440970d5abdf86503820

autoload.php

@@ -514,41 +514,41 @@ $wgAutoloadLocalClasses = [
 	'GitInfo' => __DIR__ . '/includes/GitInfo.php',
 	'GlobalDependency' => __DIR__ . '/includes/cache/CacheDependency.php',
 	'GlobalVarConfig' => __DIR__ . '/includes/config/GlobalVarConfig.php',
-	'HTMLApiField' => __DIR__ . '/includes/htmlform/HTMLApiField.php',
-	'HTMLAutoCompleteSelectField' => __DIR__ . '/includes/htmlform/HTMLAutoCompleteSelectField.php',
-	'HTMLButtonField' => __DIR__ . '/includes/htmlform/HTMLButtonField.php',
+	'HTMLApiField' => __DIR__ . '/includes/htmlform/fields/HTMLApiField.php',
+	'HTMLAutoCompleteSelectField' => __DIR__ . '/includes/htmlform/fields/HTMLAutoCompleteSelectField.php',
+	'HTMLButtonField' => __DIR__ . '/includes/htmlform/fields/HTMLButtonField.php',
 	'HTMLCacheUpdate' => __DIR__ . '/includes/deferred/HTMLCacheUpdate.php',
 	'HTMLCacheUpdateJob' => __DIR__ . '/includes/jobqueue/jobs/HTMLCacheUpdateJob.php',
-	'HTMLCheckField' => __DIR__ . '/includes/htmlform/HTMLCheckField.php',
-	'HTMLCheckMatrix' => __DIR__ . '/includes/htmlform/HTMLCheckMatrix.php',
-	'HTMLComboboxField' => __DIR__ . '/includes/htmlform/HTMLComboboxField.php',
-	'HTMLEditTools' => __DIR__ . '/includes/htmlform/HTMLEditTools.php',
+	'HTMLCheckField' => __DIR__ . '/includes/htmlform/fields/HTMLCheckField.php',
+	'HTMLCheckMatrix' => __DIR__ . '/includes/htmlform/fields/HTMLCheckMatrix.php',
+	'HTMLComboboxField' => __DIR__ . '/includes/htmlform/fields/HTMLComboboxField.php',
+	'HTMLEditTools' => __DIR__ . '/includes/htmlform/fields/HTMLEditTools.php',
 	'HTMLFileCache' => __DIR__ . '/includes/cache/HTMLFileCache.php',
-	'HTMLFloatField' => __DIR__ . '/includes/htmlform/HTMLFloatField.php',
+	'HTMLFloatField' => __DIR__ . '/includes/htmlform/fields/HTMLFloatField.php',
 	'HTMLForm' => __DIR__ . '/includes/htmlform/HTMLForm.php',
 	'HTMLFormField' => __DIR__ . '/includes/htmlform/HTMLFormField.php',
-	'HTMLFormFieldCloner' => __DIR__ . '/includes/htmlform/HTMLFormFieldCloner.php',
+	'HTMLFormFieldCloner' => __DIR__ . '/includes/htmlform/fields/HTMLFormFieldCloner.php',
 	'HTMLFormFieldRequiredOptionsException' => __DIR__ . '/includes/htmlform/HTMLFormFieldRequiredOptionsException.php',
-	'HTMLFormFieldWithButton' => __DIR__ . '/includes/htmlform/HTMLFormFieldWithButton.php',
-	'HTMLHiddenField' => __DIR__ . '/includes/htmlform/HTMLHiddenField.php',
-	'HTMLInfoField' => __DIR__ . '/includes/htmlform/HTMLInfoField.php',
-	'HTMLIntField' => __DIR__ . '/includes/htmlform/HTMLIntField.php',
-	'HTMLMultiSelectField' => __DIR__ . '/includes/htmlform/HTMLMultiSelectField.php',
+	'HTMLFormFieldWithButton' => __DIR__ . '/includes/htmlform/fields/HTMLFormFieldWithButton.php',
+	'HTMLHiddenField' => __DIR__ . '/includes/htmlform/fields/HTMLHiddenField.php',
+	'HTMLInfoField' => __DIR__ . '/includes/htmlform/fields/HTMLInfoField.php',
+	'HTMLIntField' => __DIR__ . '/includes/htmlform/fields/HTMLIntField.php',
+	'HTMLMultiSelectField' => __DIR__ . '/includes/htmlform/fields/HTMLMultiSelectField.php',
 	'HTMLNestedFilterable' => __DIR__ . '/includes/htmlform/HTMLNestedFilterable.php',
-	'HTMLRadioField' => __DIR__ . '/includes/htmlform/HTMLRadioField.php',
-	'HTMLSelectAndOtherField' => __DIR__ . '/includes/htmlform/HTMLSelectAndOtherField.php',
-	'HTMLSelectField' => __DIR__ . '/includes/htmlform/HTMLSelectField.php',
-	'HTMLSelectLimitField' => __DIR__ . '/includes/htmlform/HTMLSelectLimitField.php',
-	'HTMLSelectNamespace' => __DIR__ . '/includes/htmlform/HTMLSelectNamespace.php',
-	'HTMLSelectNamespaceWithButton' => __DIR__ . '/includes/htmlform/HTMLSelectNamespaceWithButton.php',
-	'HTMLSelectOrOtherField' => __DIR__ . '/includes/htmlform/HTMLSelectOrOtherField.php',
-	'HTMLSubmitField' => __DIR__ . '/includes/htmlform/HTMLSubmitField.php',
-	'HTMLTagFilter' => __DIR__ . '/includes/htmlform/HTMLTagFilter.php',
-	'HTMLTextAreaField' => __DIR__ . '/includes/htmlform/HTMLTextAreaField.php',
-	'HTMLTextField' => __DIR__ . '/includes/htmlform/HTMLTextField.php',
-	'HTMLTextFieldWithButton' => __DIR__ . '/includes/htmlform/HTMLTextFieldWithButton.php',
-	'HTMLTitleTextField' => __DIR__ . '/includes/htmlform/HTMLTitleTextField.php',
-	'HTMLUserTextField' => __DIR__ . '/includes/htmlform/HTMLUserTextField.php',
+	'HTMLRadioField' => __DIR__ . '/includes/htmlform/fields/HTMLRadioField.php',
+	'HTMLSelectAndOtherField' => __DIR__ . '/includes/htmlform/fields/HTMLSelectAndOtherField.php',
+	'HTMLSelectField' => __DIR__ . '/includes/htmlform/fields/HTMLSelectField.php',
+	'HTMLSelectLimitField' => __DIR__ . '/includes/htmlform/fields/HTMLSelectLimitField.php',
+	'HTMLSelectNamespace' => __DIR__ . '/includes/htmlform/fields/HTMLSelectNamespace.php',
+	'HTMLSelectNamespaceWithButton' => __DIR__ . '/includes/htmlform/fields/HTMLSelectNamespaceWithButton.php',
+	'HTMLSelectOrOtherField' => __DIR__ . '/includes/htmlform/fields/HTMLSelectOrOtherField.php',
+	'HTMLSubmitField' => __DIR__ . '/includes/htmlform/fields/HTMLSubmitField.php',
+	'HTMLTagFilter' => __DIR__ . '/includes/htmlform/fields/HTMLTagFilter.php',
+	'HTMLTextAreaField' => __DIR__ . '/includes/htmlform/fields/HTMLTextAreaField.php',
+	'HTMLTextField' => __DIR__ . '/includes/htmlform/fields/HTMLTextField.php',
+	'HTMLTextFieldWithButton' => __DIR__ . '/includes/htmlform/fields/HTMLTextFieldWithButton.php',
+	'HTMLTitleTextField' => __DIR__ . '/includes/htmlform/fields/HTMLTitleTextField.php',
+	'HTMLUserTextField' => __DIR__ . '/includes/htmlform/fields/HTMLUserTextField.php',
 	'HWLDFWordAccumulator' => __DIR__ . '/includes/diff/DairikiDiff.php',
 	'HashBagOStuff' => __DIR__ . '/includes/libs/objectcache/HashBagOStuff.php',
 	'HashConfig' => __DIR__ . '/includes/config/HashConfig.php',