Implementation of 2D Raman block

[ml-evs]

This PR is a transplant of @elbee99's work in #782, and closes #781.

There's a few things to iron out, but I think this is ready to merge -- I will add a little block warning that just says to be wary of the alignment.

[codecov]

Codecov Report

Attention: Patch coverage is 27.35849% with 77 lines in your changes missing coverage. Please review.

Project coverage is 67.30%. Comparing base (21ed72d) to head (2dcf371).

Files with missing lines	Patch %	Lines
pydatalab/src/pydatalab/apps/raman_map/blocks.py	25.24%	77 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #936      +/-   ##
==========================================
- Coverage   68.38%   67.30%   -1.08%     
==========================================
  Files          62       64       +2     
  Lines        3928     4034     +106     
==========================================
+ Hits         2686     2715      +29     
- Misses       1242     1319      +77     

Files with missing lines	Coverage Δ
pydatalab/src/pydatalab/apps/raman_map/__init__.py	100.00% <100.00%> (ø)
pydatalab/src/pydatalab/blocks/__init__.py	100.00% <100.00%> (ø)
pydatalab/src/pydatalab/blocks/common.py	60.81% <ø> (ø)
pydatalab/src/pydatalab/apps/raman_map/blocks.py	25.24% <25.24%> (ø)

[cypress]

datalab    Run #2589

Run Properties:   Passed #2589  •  4cad5ea235 ℹ️: Merge 2dcf37155b6bcc7d3bd602e3b08482f06e141e81 into 21ed72d35f6b26d3670d1bfba22a...

Project	datalab
Run status	Passed #2589
Run duration	06m 36s
Commit	4cad5ea235 ℹ️: Merge 2dcf37155b6bcc7d3bd602e3b08482f06e141e81 into 21ed72d35f6b26d3670d1bfba22a...
Committer	Matthew Evans
View all properties for this run ↗︎

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Test results
Failures	0
Flaky	0
Pending	0
Skipped	0
Passing	396