Setup golangci-lint

[Sean-Der]

We can use the Github Action and inserts the errors right into the UI.

      - name: golangci-lint
        uses: golangci/golangci-lint-action@v2
        with:
          version: v1.31

Currently it can't be run because the code base has a mix of WASM/non-wasm code. I think we just need exclude the js code with build tags?

sean@SeanLaptop:~/go/src/github.com/maxmcd/webtty$ golangci-lint run
WARN [runner] Can't run linter goanalysis_metalinter: S1031: failed prerequisites: [(inspect@github.com/maxmcd/webtty/web-client/src, isgenerated@github.com/maxmcd/webtty/web-client/src): analysis skipped: errors in package: [/home/sean/go/src/github.com/maxmcd/webtty/web-client/src/main.go:4:2: could not import syscall/js (-: build constraints exclude all Go files in /opt/go/src/syscall/js)]]
WARN [runner] Can't run linter unused: buildir: failed to load package : could not load export data: no export data for "syscall/js"
ERRO Running error: buildir: failed to load package : could not load export data: no export data for "syscall/js"