Support plaintext fasta on desktop by dynamically creating a FAI file on the fly

[cmdcolin]

Fixes #2428

Allows streaming a large FASTA file so the operation remains out of memory, creates a FAI file on the fly, stores it in userData/fai/filename+Date.now()+.fai and then dynamically creates an IndexedFastaAdapter config from this

Helps aid memory usage so that we don't have to load the whole genome into memory

Uses some of the concepts learned about streaming files from text-index in the process

[codecov]

Codecov Report

Merging #2443 (d99b67f) into main (79e5fb1) will decrease coverage by 0.05%.
The diff coverage is 0.00%.

❗ Current head d99b67f differs from pull request most recent head 61c48bd. Consider uploading reports for the commit 61c48bd to get more accurate results

@@            Coverage Diff             @@
##             main    #2443      +/-   ##
==========================================
- Coverage   61.16%   61.11%   -0.06%     
==========================================
  Files         540      540              
  Lines       25147    25168      +21     
  Branches     5873     5881       +8     
==========================================
  Hits        15381    15381              
- Misses       9445     9466      +21     
  Partials      321      321              

Impacted Files	Coverage Δ
...roducts/jbrowse-desktop/src/OpenSequenceDialog.tsx	3.84% <0.00%> (-1.42%)	⬇️

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[rbuels]

have you tested the error handling for when the index generator fails?

[cmdcolin]

have you tested the error handling for when the index generator fails?

should be ok, it has a little error display if no sequences were found in the file for example (staying at the OpenSequenceDialog screen)

[cmdcolin]

had a limitation before that only allowed fasta with \n and not \r\n but now allows both