feat: record validation and end-to-end response time in signer metrics #265

	## Perform Clippy checks - currently set to defaults
	## https://github.com/rust-lang/rust-clippy#usage
	## https://rust-lang.github.io/rust-clippy/master/index.html
	##
	name: Clippy Checks

	# Only run when:
	# - PRs are (re)opened against develop branch
	on:
	pull_request:
	branches:
	- develop
	types:
	- opened
	- reopened
	- synchronize

	jobs:
	clippy_check:
	name: Clippy Check
	runs-on: ubuntu-latest
	steps:
	- name: Checkout the latest code
	id: git_checkout
	uses: actions/checkout@v3
	- name: Define Rust Toolchain
	id: define_rust_toolchain
	run: echo "RUST_TOOLCHAIN=$(cat ./rust-toolchain)" >> $GITHUB_ENV
	- name: Setup Rust Toolchain
	id: setup_rust_toolchain
	uses: actions-rust-lang/setup-rust-toolchain@v1
	with:
	toolchain: ${{ env.RUST_TOOLCHAIN }}
	components: clippy
	- name: Clippy
	id: clippy
	uses: actions-rs/clippy-check@v1
	with:
	token: ${{ secrets.GITHUB_TOKEN }}
	args: -p libstackerdb -p stacks-signer -p pox-locking -p clarity -p libsigner -p stacks-common --no-deps --tests --all-features -- -D warnings

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