Improve logging

[d-perl]

Fixes #910, Fixes #1150

• Removes the logging-level CLI argument as handlers are now instantiated with default args
• tidies up logging setup
• stops us from logging to prod graylog in tests

Link to dodal PR (if required): DiamondLightSource/dodal#320

To test:

1. Run tests

[codecov]

Codecov Report

Attention: 2 lines in your changes are missing coverage. Please review.

Comparison is base (4fefc9a) 93.04% compared to head (e3b7353) 92.96%.
Report is 2 commits behind head on main.

❗ Current head e3b7353 differs from pull request most recent head 990209f. Consider uploading reports for the commit 990209f to get more accurate results

Files	Patch %	Lines
src/hyperion/parameters/cli.py	60.00%	2 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #1137      +/-   ##
==========================================
- Coverage   93.04%   92.96%   -0.08%     
==========================================
  Files          69       69              
  Lines        3436     3413      -23     
==========================================
- Hits         3197     3173      -24     
- Misses        239      240       +1     

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[noemifrisina]

lgtm