Add spectrum selection controls to NMR insitu datablock

[BenjaminCharmes]

Dependencies:

• Required for: datalab-app-plugin-insitu PR#38

Features:

• Added user controls to select which NMR experiments to process and visualize:
  • Start/end experiment range selection
  • Step parameter for sampling
  • Input validation for parameter combinations

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 71.73%. Comparing base (57652b8) to head (3f9b2fb).

Additional details and impacted files

@@           Coverage Diff           @@
##             main    #1222   +/-   ##
=======================================
  Coverage   71.73%   71.73%           
=======================================
  Files          66       66           
  Lines        4479     4479           
=======================================
  Hits         3213     3213           
  Misses       1266     1266           

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[cypress]

datalab    Run #3410

Run Properties:   Passed #3410  •  d66c86bb01 ℹ️: Merge 3f9b2fbcf6b89c7bfc5b97a126492e27f1e3d4b7 into 57652b86cafd4fadf350817d2241...

Project	datalab
Branch Review	bc/insitu-ui
Run status	Passed #3410
Run duration	07m 57s
Commit	d66c86bb01 ℹ️: Merge 3f9b2fbcf6b89c7bfc5b97a126492e27f1e3d4b7 into 57652b86cafd4fadf350817d2241...
Committer	Ben Charmes
View all properties for this run ↗︎

---

Test results
Failures	0
Flaky	0
Pending	0
Skipped	0
Passing	504
View all changes introduced in this branch ↗︎