Remove typer as a dependency and streamline accordingly

[bachya]

Describe what the PR does:

typer is a wonderful library, but after much consideration, it isn't the greatest fit here:

1. It can't do the complex config validation we need without lots of custom code.
2. We aren't making use of any features that elevate it above, say, argparse.
3. It comes with several sub-dependencies that we don't use.

So, this (unfortunately large) PR does the following:

1. Removes typer (and most of its subdependencies) from our graph
2. Retains (and explicitly uses) voluptuous for config validation and coercion (allowing us to replace a lot of custom logic)
3. Uses plain ol' argparse for CLI parsing
4. Retains colorlog so we can still get nicely colored log messages

Does this fix a specific issue?

N/A

Checklist:

• Confirm that one or more new tests are written for the new functionality.
• Run tests and ensure everything passes (with 100% test coverage).
• Update README.md with any new documentation.
• Add yourself to AUTHORS.md.

[codecov]

Codecov Report

Merging #266 (2761304) into dev (3bc325f) will not change coverage.
The diff coverage is 100.00%.

❗ Current head 2761304 differs from pull request most recent head 6c24ca6. Consider uploading reports for the commit 6c24ca6 to get more accurate results

@@            Coverage Diff            @@
##               dev      #266   +/-   ##
=========================================
  Coverage   100.00%   100.00%           
=========================================
  Files           21        22    +1     
  Lines         1018      1081   +63     
=========================================
+ Hits          1018      1081   +63     

Impacted Files	Coverage Δ
ecowitt2mqtt/__main__.py	100.00% <100.00%> (ø)
ecowitt2mqtt/config.py	100.00% <100.00%> (ø)
ecowitt2mqtt/const.py	100.00% <100.00%> (ø)
ecowitt2mqtt/core.py	100.00% <100.00%> (ø)
ecowitt2mqtt/helpers/config_validation.py	100.00% <100.00%> (ø)
ecowitt2mqtt/runtime.py	100.00% <100.00%> (ø)

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