Cod 1173 build golang tests with codspeed instrumentation in runner

[not-matthias]

Continuation from #3 : Accidentally pushed target during a rebase and let Claude fix it, which closed the PR(?)

The process is split into multiple parts:

• Discovery: Finds all the test packages for a project, filters out packages without benchmarks.
  • Verifier: Walks the AST of a source file to ensure the t *testing.B parameter isn't passed to a function.
• Templater: Copies the project to a tmp folder, creates a new cli/runner.go main file with the benchmarks.
  • Patcher: Patches the imports from testing to our codspeed compat package
• Runner: Builds the cli/runner.go and outputs the binary.

[codspeed-hq]

CodSpeed Performance Report

Congrats! CodSpeed is installed 🎉

🆕 10 new benchmarks were detected.

You will start to see performance impacts in the reports once the benchmarks are run from your default branch.

Detected benchmarks

• BenchmarkFibonacci20_Loop (71.1 µs)
• BenchmarkFibonacci20_bN (68.7 µs)
• BenchmarkSleep100ns (206 ns)
• BenchmarkSleep100us (100.1 µs)
• BenchmarkSleep10ms (10 ms)
• BenchmarkSleep10us (10.1 µs)
• BenchmarkSleep1ms (1 ms)
• BenchmarkSleep1us (1.1 µs)
• BenchmarkSleep50ms (50 ms)
• fibonacci(10) (549 ns)

[GuillaumeLagrange]

olgtm,
watch out some commits are unverified tho

[art049]

Looks really cool! Excited to see it working