Merge pull request #51615 from Bhu1-V/PR/docs/cmd-plt

`EditorCommandPalette` Documentation.

doc/classes/EditorCommandPalette.xml

@@ -1,8 +1,26 @@
 <?xml version="1.0" encoding="UTF-8" ?>
 <class name="EditorCommandPalette" inherits="ConfirmationDialog" version="4.0">
 	<brief_description>
+		Godot editor's command palette.
 	</brief_description>
 	<description>
+		Object that holds all the available Commands and their shortcuts text. These Commands can be accessed through [b]Editor &gt; Command Palette[/b] menu.
+		Command key names use slash delimiters to distinguish sections Example: [code]"example/command1"[/code] then [code]example[/code] will be the section name.
+		[codeblocks]
+		[gdscript]
+		var command_palette = get_editor_interface().get_command_palette()
+		# external_command is a function that will be called with the command is executed.
+		var command_callable = Callable(self, "external_command").bind(arguments)
+		command_palette.add_command("command", "test/command",command_callable)
+		[/gdscript]
+		[csharp]
+		EditorCommandPalette commandPalette = GetEditorInterface().GetCommandPalette();
+		// ExternalCommand is a function that will be called with the command is executed.
+		Callable commandCallable = new Callable(this, nameof(ExternalCommand));
+		commandPalette.AddCommand("command", "test/command", commandCallable)
+		[/csharp]
+		[/codeblocks]
+		[b]Note:[/b] This class shouldn't be instantiated directly. Instead, access the singleton using [method EditorInterface.get_command_palette].
 	</description>
 	<tutorials>
 	</tutorials>
@@ -14,12 +32,19 @@
 			<argument index="2" name="binded_callable" type="Callable" />
 			<argument index="3" name="shortcut_text" type="String" default="&quot;None&quot;" />
 			<description>
+				Adds a custom command to EditorCommandPalette.
+				- [code]command_name[/code]: [String] (Name of the [b]Command[/b]. This is displayed to the user.)
+				- [code]key_name[/code]: [String] (Name of the key for a particular [b]Command[/b]. This is used to uniquely identify the [b]Command[/b].)
+				- [code]binded_callable[/code]: [Callable] (Callable of the [b]Command[/b]. This will be executed when the [b]Command[/b] is selected.)
+				- [code]shortcut_text[/code]: [String] (Shortcut text of the [b]Command[/b] if available.)
 			</description>
 		</method>
 		<method name="remove_command">
 			<return type="void" />
 			<argument index="0" name="key_name" type="String" />
 			<description>
+				Removes the custom command from EditorCommandPalette.
+				- [code]key_name[/code]: [String] (Name of the key for a particular [b]Command[/b].)
 			</description>
 		</method>
 	</methods>

doc/classes/EditorInterface.xml

@@ -33,6 +33,7 @@
 		<method name="get_command_palette" qualifiers="const">
 			<return type="EditorCommandPalette" />
 			<description>
+				Returns the editor's [EditorCommandPalette] instance.
 			</description>
 		</method>
 		<method name="get_current_path" qualifiers="const">