Isolate golang tool dependencies

[silverwind]

Tool dependencies are currently installed as global commands via the Makefile via block like this:

@hash gofumpt > /dev/null 2>&1; if [ $$? -ne 0 ]; then \
  $(GO) install mvdan.cc/gofumpt@v0.3.0; \
fi

This present the issue that once installed, a tool will never update without manual intervention and it makes it very hard to work on multiple projects or even branches with different tool versions.

golang/go#25922 (comment) shows a few possible solutions. Might be worth a try with bingo which seems to promise a lot, but I'm not sure it actually delivers.