build: Remove build deps management

[jannotti]

go run supports running arbitrary go modules like this: go run golang.org/x/tools/cmd/[email protected]

It downloads and compiles as needed, caching the result. By using that everywhere that our build wanted to demand a previous install of some program, we don't need any of the complexity around check_deps.sh, install_buildtools.sh and the like. This PR removes them and the bespoke version management we were doing with versions file. Now the versions are explicit in the source/Makefiles.

There shouldn't be a performance problem because the programs will run out of Go's local module cache. Let's see.

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 55.98%. Comparing base (877090b) to head (e1ab7ea).
Report is 46 commits behind head on master.

Additional details and impacted files

@@            Coverage Diff             @@
##           master    #5915      +/-   ##
==========================================
- Coverage   55.99%   55.98%   -0.02%     
==========================================
  Files         478      478              
  Lines       67602    67602              
==========================================
- Hits        37855    37845      -10     
- Misses      27187    27196       +9     
- Partials     2560     2561       +1     

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[algorandskiy]

I like removal some of the shell scripts but I was nice to have all these deps listed in one place with versions. The install_buildtools.sh missed versions pinning but it is ok.
Maybe it is possible grepping for go run and buld such a scripts/buildtools/versions automatically. Or get them in go.mod somehow?

[jannotti]

I like removal some of the shell scripts but I was nice to have all these deps listed in one place with versions.

I think it's probably better to git grep for the tool name when you have a question about what version we use. I wouldn't want to spend the time making a script to find the calls, integrate that script into the build so it stays up to date, and then spend time changing it if go run appears in a funny way like it does in here:

 xrun(["go", "run", "gotest.tools/[email protected]",...

git grep gotestsum and a human operator should always work.