* #1277 Replace datetime.datetime with DateTime across codebase
Replaced all instances of standard library 'datetime.datetime' with a new 'DateTime' type from `.custom` module. This change is necessary to make all date-time values compatible with the Telegram Bot API (it uses Unix time). This will simplify the conversion process and eliminate potential errors related to date-time format mismatches. Changed codebase, butcher files, and modified 'pyproject.toml' to shift the typing-extensions dependency. The 'aiogram/custom_types.py' file was renamed to 'aiogram/types/custom.py' to better reflect its nature as a location for custom types used in the aiogram library.
* Re-generate API
* Added new modules
* Added handling new event type and approve/decline aliases for ChatJoinRequest
* Fixed code-coverage
* Bump API version
* Added patch-notes
Upgrade architecture + 5.0 Bot API (#469)
* Moved `methods`, `types` and `client` to root package
* Removed update handler from routers to dispatcher
* Reworked events propagation mechanism to handlers
* Reworked inner middlewares logic (very small change)
* Updated to Bot API 5.0
* Initial migration from MkDocs to Sphinx + config for readthedocs
