Soft deprecate file_path for SpikeGLXRecordingInterface and SpikeGLXNIDQInterface

[h-mayorquin]

As this is an important change, we are giving it a year instead of our typical six months.

Should close #978

[bendichter]

lgtm

[codecov]

Codecov Report

Attention: Patch coverage is 83.33333% with 1 line in your changes missing coverage. Please review.

Project coverage is 90.75%. Comparing base (96dfdff) to head (9e64664).
Report is 7 commits behind head on main.

Files with missing lines	Patch %	Lines
...terfaces/ecephys/spikeglx/spikeglxnidqinterface.py	66.66%	1 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #1155      +/-   ##
==========================================
+ Coverage   90.69%   90.75%   +0.06%     
==========================================
  Files         129      129              
  Lines        8189     8286      +97     
==========================================
+ Hits         7427     7520      +93     
- Misses        762      766       +4     

Flag	Coverage Δ
unittests	90.75% <83.33%> (+0.06%)	⬆️

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

Files with missing lines	Coverage Δ
...terfaces/ecephys/spikeglx/spikeglxdatainterface.py	95.71% <100.00%> (+0.71%)	⬆️
...terfaces/ecephys/spikeglx/spikeglxnidqinterface.py	85.49% <66.66%> (-12.55%)	⬇️

... and 3 files with indirect coverage changes