Add global allow sending without reply parameter

[jonowo]

Description

Similar to the global parse_mode and disable_web_page_preview parameters, the global allow_sending_without_reply parameter is added to set a default for allow_sending_without_reply when sending messages.

Type of change

• New feature (non-breaking change which adds functionality)

How Has This Been Tested?

I cannot add a unit test for this because the returned Message object from Bot.send_message does not indicate if the message was allowed to be sent without a reply.

I created a bot with allow_sending_without_reply=True and it did set the allow_sending_without_reply parameter in its sendMessage request.

Test Configuration:

• Operating System: Windows 10
• Python version: Python 3.9.0

3 existing unit tests failed before my changes. There were no extra failed tests after my changes.

============================================================ short test summary info ============================================================
FAILED tests/types/test_chat.py::test_update_chat - AssertionError: assert {'bio': 'bio',\n 'can_set_sticker_set': True,\n 'description': 'desc...
FAILED tests/types/test_message.py::test_export - AssertionError: assert {'chat': {'first_name': 'FirstName',\n          'id': 12345678,\n     ...
FAILED tests/types/test_update.py::test_export - AssertionError: assert {'message': {'chat': {'first_name': 'FirstName',\n                     ...
============================================ 3 failed, 388 passed, 8 skipped, 17 warnings in 17.58s =============================================

Checklist:

• My code follows the style guidelines of this project
• I have performed a self-review of my own code
• I have made corresponding changes to the documentation
• My changes generate no new warnings
• I have added tests that prove my fix is effective or that my feature works (explained above)
• New and existing unit tests pass locally with my changes (explained above)

[bomzheg]

It will be nice to add default parameter to webhook responses, but webhooks responses supports now not all default params.

You can see example about the changes at one similar PR

[Olegt0rr]

Please, add webhook support as mentioned here