Adding sample implementation of a metrics handler #4

	name: Build extensibility examples

	on:
	pull_request:
	paths:
	- 'extensibility/**'

	jobs:
	extensibility-test:
	strategy:
	fail-fast: true
	matrix:
	os: [ubuntu-latest, macos-latest]
	runs-on: ${{ matrix.os }}
	steps:
	- name: Print build information
	run: 'echo head_ref: ${{ github.head_ref }}, ref: ${{ github.ref }}, os: ${{ matrix.os }}'
	- uses: actions/checkout@v2
	- name: Set up Go
	uses: actions/[email protected]
	with:
	go-version: '1.20'
	- name: build
	working-directory: extensibility
	run: go build ./...

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