Add type comments to decorators

[timon-k]

In order to be able to use the playback decorators in typed code without ignoring them, this PR adds type annotations to the interfaces which are used by users of the library.

For compatibility with Python 2, they are introduced as type comments only. It still requires some imports from typing, but I've tried to keep this minimal and import additional types only if TYPE_CHECKING.

[codecov-commenter]

Codecov Report

❌ Patch coverage is 48.00000% with 13 lines in your changes missing coverage. Please review.
✅ Project coverage is 98.34%. Comparing base (8767147) to head (f7716dc).

Files with missing lines	Patch %	Lines
playback/tape_recorder.py	38.88%	11 Missing ⚠️
playback/interception/input_interception.py	66.66%	1 Missing ⚠️
playback/interception/output_interception.py	66.66%	1 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main      #90      +/-   ##
==========================================
- Coverage   99.26%   98.34%   -0.93%     
==========================================
  Files          25       25              
  Lines        1367     1388      +21     
==========================================
+ Hits         1357     1365       +8     
- Misses         10       23      +13     

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