classref: Add support for [member] and [signal] tags

Part of #11137.

classes/class_lineedit.rst

@@ -80,10 +80,14 @@ Member Functions
 Signals
 -------
 
+.. _class_LineEdit_text_changed:
+
 -  **text_changed**  **(** :ref:`String<class_string>` text  **)**
 
 When the text changes, this signal is emitted.
 
+.. _class_LineEdit_text_entered:
+
 -  **text_entered**  **(** :ref:`String<class_string>` text  **)**
 
 This signal is emitted when the user presses KEY_ENTER on the :ref:`LineEdit<class_lineedit>`. This signal is often used as an alternate confirmation mechanism in dialogs.
@@ -92,18 +96,51 @@ This signal is emitted when the user presses KEY_ENTER on the :ref:`LineEdit<cla
 Member Variables
 ----------------
 
+  .. _class_LineEdit_align:
+
 - :ref:`int<class_int>` **align**
+
+  .. _class_LineEdit_caret_blink:
+
 - :ref:`bool<class_bool>` **caret_blink**
+
+  .. _class_LineEdit_caret_blink_speed:
+
 - :ref:`float<class_float>` **caret_blink_speed**
+
+  .. _class_LineEdit_editable:
+
 - :ref:`bool<class_bool>` **editable**
+
+  .. _class_LineEdit_expand_to_len:
+
 - :ref:`bool<class_bool>` **expand_to_len**
+
+  .. _class_LineEdit_focus_mode:
+
 - :ref:`int<class_int>` **focus_mode**
+
+  .. _class_LineEdit_max_length:
+
 - :ref:`int<class_int>` **max_length**
+
+  .. _class_LineEdit_placeholder_alpha:
+
 - :ref:`float<class_float>` **placeholder_alpha**
+
+  .. _class_LineEdit_placeholder_text:
+
 - :ref:`String<class_string>` **placeholder_text**
+
+  .. _class_LineEdit_secret:
+
 - :ref:`bool<class_bool>` **secret**
+
+  .. _class_LineEdit_text:
+
 - :ref:`String<class_string>` **text**
 
+
 Numeric Constants
 -----------------