add internal end-to-end docs #4468

	name: MicroBenchmarks

	on:
	push:
	branches: [ main ]
	pull_request:
	branches: [ main ]
	# `workflow_dispatch` allows CodSpeed to trigger backtest
	# performance analysis in order to generate initial data.
	workflow_dispatch:

	# Cancel already running jobs
	concurrency:
	group: benchmark_run_${{ github.head_ref }}
	cancel-in-progress: true

	jobs:
	benchmarks:
	runs-on: ubuntu-22.04
	steps:
	- uses: actions/checkout@v4
	- uses: Swatinem/rust-cache@v2
	with:
	# this line means that only the main branch writes to the cache
	# benefits:
	# * prevents main branch caches from being evicted in favor of a PR cache
	# * saves about 1min per workflow by skipping the actual cache write
	# downsides:
	# * PRs that update rust version or changes deps will be slow to iterate on due to changes not being cached.
	save-if: ${{ github.ref == 'refs/heads/main' }}
	- uses: taiki-e/install-action@v2
	with:
	tool: cargo-codspeed
	- name: Build the benchmark target(s)
	run: cargo codspeed build --features alpha-transforms
	- name: Run the benchmarks
	uses: CodSpeedHQ/action@v2
	with:
	run: cargo codspeed run

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