Documenation additions to Mobject class (#1101)

* test

* revert test changes

* doc: add_background_rectangle

* test

* revert changes

* add doc: add_background_rectangle

* add doc: add_background_rectangle

* add docs: init_colors and generate_points

* changes to code-style in add documentation

* add add_to_back in see also of add

* change doc: add_to_back

* docs: unify the way, code is formated (from :code:`...` to ``...``)

* add length_along_dim in See also for width, height and depth

* add docs: copy

* add docs: update

* change docs: update

* add docs: get_time_based_updaters and has_time_based_updater

* add docs: get_updaters

* unify the way methods are referenced

* add new example to add_updater

* remove old example in add_upader

* add example: update function using dt

* add doc: remove_updater

* add doc: clear_upaters

* add doc: match_updaters

* add doc: suspend_updating

* add doc: resume_updating

* add doc: apply_to_family

* add doc: shift

* add doc: scale

* fix commiting issue resulting in a deleted line

* back-check files

* Change first doc lines to match guidelines

* Adjust type specifications to match docs guildelines

* run black

* Delete test.py

* remove bug-fix

* Add type statement to function definitions

* Fix return type declarations

* Remove -> None

* Update manim/mobject/mobject.py

Co-authored-by: Naveen M K <[email protected]>

* Update manim/mobject/mobject.py

Co-authored-by: Naveen M K <[email protected]>

* Update manim/mobject/mobject.py

Co-authored-by: Naveen M K <[email protected]>

* Update manim/mobject/mobject.py

Co-authored-by: Naveen M K <[email protected]>

* add color type def

* Update manim/mobject/mobject.py

Co-authored-by: Naveen M K <[email protected]>

* Update manim/mobject/mobject.py

Co-authored-by: Naveen M K <[email protected]>

* Update manim/mobject/mobject.py

Co-authored-by: Naveen M K <[email protected]>

* Update manim/mobject/mobject.py

Co-authored-by: Naveen M K <[email protected]>

* Update manim/mobject/mobject.py

Co-authored-by: Naveen M K <[email protected]>

* Update manim/mobject/mobject.py

Co-authored-by: Naveen M K <[email protected]>

* Update manim/mobject/mobject.py

Co-authored-by: Naveen M K <[email protected]>

* Update manim/mobject/mobject.py

Co-authored-by: Naveen M K <[email protected]>

* add typing additions

* list typing

* Update manim/mobject/mobject.py

Co-authored-by: Naveen M K <[email protected]>

* Update manim/mobject/mobject.py

Co-authored-by: Naveen M K <[email protected]>

* add Typing to update function

* add optional int type

* Update manim/mobject/mobject.py

Co-authored-by: Naveen M K <[email protected]>

* change Updater typing

* remove types from docstrig where redundant

* black

Co-authored-by: Naveen M K <[email protected]>

Author: AntonBallmaier