Add documentation for Docks

Author: vgezer

tutorials/editor/docks.rst

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+.. _doc_docks:
+
+Docks
+-----
+
+Docks or tabs are positioned on the left and right sides of the viewport. 
+Their usage is covered in their respective pages.
+
+.. toctree::
+   :maxdepth: 1
+   :name: toc-editor-docks
+
+   import_dock
+   filesystem_dock
+   inspector_dock
+   node_dock
+   history_dock
+
+
+You can also customize the docks by moving, or resizing them.
+Read :ref:`doc_customizing_editor` for more on this.

tutorials/editor/filesystem_dock.rst

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+.. _doc_filesystem_dock:
+
+FileSystem Dock
+===============
+
+FileSystem dock contains lists all resources available for the current project.
+You can think it as a built-in file browser in the Godot's Editor.
+The root folder is the :ref:`res:// <doc_filesystem>` folder.
+
+.. image:: img/filesystem_dock.webp
+
+The "<" and ">" arrows navigate between the previous and next selected file in the view history.
+The text field next to the arrows shows the relative path to the selected file or folder.
+Below this field is the location of all files and folders in the project.
+
+The button next to the relative path field switches through the look of the contents. 
+The square shows the resources in tree view, which the files and folders share the same location. 
+Clicking on this button changes the split mode of the folders and files.
+Clicking once lists the folders above and the subfolders or the files inside
+the folders below. Clicking it again moves the folders to the left, and the subfolders and 
+the files to the right.
+
+In any viewing mode, you can use the "Filter Files" bar to search for a file or folder.
+The button next to this bar provides a set of sorting options for the contents.
+You can sort the contents by name, type, or modification time, in ascending or descending order.
+
+If using a split mode, you can also change the look of thumbnails in the files section, by pressing
+the button next to the sort button.
+
+The blue ``.tscn`` file (Scene File) in the file list means that this scene is the main scene
+if the project.
+You can right click on any other scene files and choose "Set As Main Scene" to change it.
+This can also later be changed via navigating to `Project > Project Settings > Run`.
+You can also `instantiate` the scene or create a new scene by `inheriting` it using the context
+menu on the scene files.
+
+Hovering over a file gives information on the file size and the type.
+Some resources can be dragged and dropped onto the 2D or 3D viewport if they are supported.
+If a resource is accepted as a sub-resource, you can also drag it onto a sub-resource section 
+inside the Inspector dock.
+
+.. Refer to :ref:`doc_inspector_dock`
+
+Right-clicking on a folder or a file provides a set of options such as renaming, deleting, moving,
+or duplicating.
+
+Some of the interesting options are the following:
+
+Note that, not all items will be visible for a single type of file.
+
+- **Edit Dependencies...**: Shows a window with files that this file depends on. If you have
+  missing dependencies, you can also pick replacements to fix them.
+- **View Owners...**: Opens a window which shows the owners of a file. You can click on a result to 
+  open it.
+- **Create New**: Lets you create a new folder, scene, script, resource, or a text file inside a folder.
+- **Copy Path**: Copies the relative path of the file or folder starting with ``res://``.
+- **Copy Absolute Path**: Copies the absolute system path of a file or folder start.
+- **Copy UID**: Copies the unique identifier of a resource if it has one. The path will start with ``uid://``.
+  The UID will not change when the item is renamed or moved. See :ref:`ResourceUID <class_ResourceUID>` for more.
+- **Add to Favorites**: Adds the selected file or folder to the favorites which will can easily be seen
+  under `Favorites` section in the resource list.
+- **Reimport**: If this file is a non-native resource, you can reimport them.
+  
+If you right click on a folder, you will have options to expand a folder or the hierarchy, or collapse it.
+Also, "Set Folder Color..." submenu will be visible to change the color of the folder.
+
+.. tip:: To move an item from one folder to another, you can drag and drop it directly onto 
+  the destination folder.
+
+.. tip:: Double-clicking a file opens the file if it can be opened inside the Editor.
+
+.. seealso:: Refer to :ref:`doc_customizing_editor` for dock customization options.

tutorials/editor/history_dock.rst

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+.. _doc_history_dock:
+
+History Dock
+============
+
+If you are unhappy with a recent setting change you made in Godot, or you prefer the 
+previous value of a node property, Godot keeps a list of actions in the `History` dock.
+This history of actions is separate for each scene and is remembered until you close 
+the project.
+
+.. image:: img/history_dock.webp
+
+If you click on an item, the project will be reverted to that state. If you do not 
+make any changes, you can change the state back and forth without losing anything.
+
+You can choose whether to display the `Scene` related actions and also include `Global` 
+changes, such as changing an editor setting in Godot's Editor. Global changes will be 
+displayed in blue text.
+
+.. warning:: The changes made in the script/text editor are not displayed here.
+
+.. tip:: Alternatively, you can use the `Scene` menu and select `Undo` or `Redo`, or use 
+  the default :kbd:`Ctrl + Z` or :kbd:`Ctrl + Y` shortcuts (:kbd:`Cmd + Z` or
+  :kbd:`Cmd + Z` on Mac).
+
+.. seealso:: Refer to :ref:`doc_customizing_editor` for dock customization options.