improvements for telegram plugin

[Wladastic]

I added a few changes to the telegram plugin, cleaning it up a bit and also added a helper to get the chat id, as many people don't know how to use postman or curl to retrieve it.

[codecov[bot]]

Codecov Report

Patch coverage has no change and project coverage change: -1.56 :warning:

Comparison is base (808016e) 58.52% compared to head (0f9972f) 56.97%.

Additional details and impacted files

@@            Coverage Diff             @@
##           master     #176      +/-   ##
==========================================
- Coverage   58.52%   56.97%   -1.56%     
==========================================
  Files          36       36              
  Lines        2122     2180      +58     
  Branches      222      233      +11     
==========================================
  Hits         1242     1242              
- Misses        858      916      +58     
  Partials       22       22              

Impacted Files	Coverage Δ
src/autogpt_plugins/telegram/__init__.py	0.00% <0.00%> (ø)
src/autogpt_plugins/telegram/telegram_chat.py	0.00% <0.00%> (ø)

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