Support requesting different telemetry types

[ianmcorvidae]

This allows passing an argument along with --request-telemetry. The default, without passing an argument, will be the current behavior, requesting device telemetry, also possible with --request-telemetry device. Other types can be requested with relevant arguments (environment, air_quality or airquality, or power)

Fixes #596

[codecov]

Codecov Report

Attention: Patch coverage is 0% with 28 lines in your changes missing coverage. Please review.

Project coverage is 60.68%. Comparing base (0573112) to head (78b92ce).
Report is 5 commits behind head on master.

Files with missing lines	Patch %	Lines
meshtastic/mesh_interface.py	0.00%	26 Missing ⚠️
meshtastic/__main__.py	0.00%	2 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##           master     #687      +/-   ##
==========================================
- Coverage   60.81%   60.68%   -0.13%     
==========================================
  Files          24       24              
  Lines        3762     3770       +8     
==========================================
  Hits         2288     2288              
- Misses       1474     1482       +8     

Flag	Coverage Δ
unittests	60.68% <0.00%> (-0.13%)	⬇️

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

☔ View full report in Codecov by Sentry.
📢 Have feedback on the report? Share it here.