Update to work with FastCS 0.9.0

[shihab-dls]

This PR updates fastcs-eiger to work with FastCS 0.9.0

[codecov]

Codecov Report

Attention: Patch coverage is 91.66667% with 3 lines in your changes missing coverage. Please review.

Project coverage is 88.10%. Comparing base (501dba7) to head (31c4a63).
Report is 1 commits behind head on main.

Files with missing lines	Patch %	Lines
src/fastcs_eiger/__main__.py	33.33%	2 Missing ⚠️
src/fastcs_eiger/eiger_controller.py	96.96%	1 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main      #67      +/-   ##
==========================================
+ Coverage   87.46%   88.10%   +0.63%     
==========================================
  Files           5        5              
  Lines         335      353      +18     
==========================================
+ Hits          293      311      +18     
  Misses         42       42              

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