Add Nix development shell to regen api.proto. #2861

	name: Build and Test
	on: [push, pull_request]
	permissions:
	contents: read

	jobs:
	build:
	name: Go CI
	runs-on: ubuntu-latest
	strategy:
	matrix:
	go: ["1.22", "1.23"]
	steps:
	- name: Set up Go
	uses: actions/setup-go@0a12ed9d6a96ab950c8f026ed9f722fe0da7ef32 #5.0.2
	with:
	go-version: ${{ matrix.go }}
	- name: Check out source
	uses: actions/checkout@692973e3d937129bcbf40652eb9f2f61becf3332 #v4.1.7
	- name: Build
	run: go build ./...
	- name: Test
	run: \|
	sh ./run_tests.sh

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