add redb backend #10

	# .github/workflows/additional-checks.yml
	name: additional checks

	on:
	push:
	branches: [ main ]
	pull_request:
	branches: [ main ]
	workflow_dispatch:

	jobs:
	security-audit:
	name: security audit
	runs-on: ubuntu-latest
	steps:
	- uses: actions/checkout@v4
	- name: install cargo-audit
	run: cargo install cargo-audit
	- name: run security audit
	run: cargo audit

	docs:
	name: documentation
	runs-on: ubuntu-latest
	steps:
	- uses: actions/checkout@v4
	- uses: dtolnay/rust-toolchain@stable
	- name: check documentation
	env:
	rustdocflags: "-d warnings"
	run: cargo doc --no-deps --all-features --workspace

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