[Feature] Build allocation export

[SchrodingersGat]

This PR adds a new "panel" to the build order page, showing a flattened table of all stock items allocated against the build order.

Separate to the "allocate stock" tab (which has now been renamed to "line items"), this allows for the complete dataset of "allocated stock" to be viewed in the one place. Importantly, it now also allows this dataset to be exported in a simple manner.

• Closes Exportable Allocate Stock to Build Table Data #6955
• Closes Consumed Stock Table Data - Complete List of Desired Fields #7431

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[codecov]

Codecov Report

Attention: Patch coverage is 91.66667% with 5 lines in your changes missing coverage. Please review.

Project coverage is 83.91%. Comparing base (5e040c4) to head (523e5ce).
Report is 319 commits behind head on master.

Files with missing lines	Patch %	Lines
...tend/src/tables/build/BuildAllocatedStockTable.tsx	82.60%	4 Missing ⚠️
src/frontend/src/components/render/Build.tsx	66.66%	1 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##           master    #7611      +/-   ##
==========================================
- Coverage   83.94%   83.91%   -0.04%     
==========================================
  Files        1094     1095       +1     
  Lines       48138    48239     +101     
  Branches     1489     1490       +1     
==========================================
+ Hits        40410    40479      +69     
- Misses       7333     7360      +27     
- Partials      395      400       +5     

Flag	Coverage Δ
backend	85.28% <100.00%> (-0.01%)	⬇️
pui	65.82% <82.75%> (+0.30%)	⬆️

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