Reworked bot-wide defaults

[JrooTJunior]

Description

Reworked bot-wide globals (like parse_mode and others)

[github-actions]

✔️ Changelog found.

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[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Comparison is base (d394af8) 100.00% compared to head (262c0e8) 100.00%.
Report is 1 commits behind head on dev-3.x.

Additional details and impacted files

@@            Coverage Diff            @@
##           dev-3.x     #1392   +/-   ##
=========================================
  Coverage   100.00%   100.00%           
=========================================
  Files          409       410    +1     
  Lines        10550     10603   +53     
=========================================
+ Hits         10550     10603   +53     

Flag	Coverage Δ
unittests	100.00% <100.00%> (ø)

Flags with carried forward coverage won't be shown. Click here to find out more.

Files	Coverage Δ
aiogram/client/bot.py	100.00% <100.00%> (ø)
aiogram/client/default.py	100.00% <100.00%> (ø)
aiogram/client/session/aiohttp.py	100.00% <ø> (ø)
aiogram/client/session/base.py	100.00% <100.00%> (ø)
aiogram/methods/copy_message.py	100.00% <100.00%> (ø)
aiogram/methods/edit_message_caption.py	100.00% <100.00%> (ø)
aiogram/methods/edit_message_text.py	100.00% <100.00%> (ø)
aiogram/methods/forward_message.py	100.00% <100.00%> (ø)
aiogram/methods/send_animation.py	100.00% <100.00%> (ø)
aiogram/methods/send_audio.py	100.00% <100.00%> (ø)
... and 41 more