AVM: Generate langspec for each version

[jasonpaulos]

Summary

Addresses #5131, which asks for a langpsec.json file to be generated for each TEAL version.

I've also generated the TEAL_opcodes.md file for each version, since I view this as the human-readable equivalent of langspec.json.

Now the files langpsec_v%d.json and TEAL_opcodes_v%d.md will be generated for each version.

Test Plan

Documentation-only change

[codecov]

Codecov Report

Merging #5629 (d3bec9f) into master (572d728) will decrease coverage by 0.04%.
Report is 1 commits behind head on master.
The diff coverage is n/a.

@@            Coverage Diff             @@
##           master    #5629      +/-   ##
==========================================
- Coverage   55.36%   55.32%   -0.04%     
==========================================
  Files         466      466              
  Lines       65733    65723      -10     
==========================================
- Hits        36394    36364      -30     
- Misses      26883    26906      +23     
+ Partials     2456     2453       -3     

Files Changed	Coverage Δ
data/transactions/logic/doc.go	70.96% <ø> (-4.04%)	⬇️
data/transactions/logic/opcodes.go	79.84% <ø> (-3.62%)	⬇️

... and 12 files with indirect coverage changes

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[jannotti]

We'll have to coordinate with the process that gets the docs onto the website, since there is no TEAL_opcodes.md any more. I imagine we either want to create it, as a copy of the last version or (I think better) the process that copies them into place should copy and link to them all. @JasonWeathersby

[jasonpaulos]

Created algorandfoundation/docs#1156 to update the docs site with this change.

[jannotti]

Looks good to me. I'd like to get this merged soon, so I can work out how it changes the process of giving spec changes to the Foundation. (probably pretty minimal)