sites: cloudflare worker for git sites routing via kv and r2
Compares the incoming host to the domain in the KV map, and fetches the
relevant site from R2. Written in Rust, compiled to wasm using
`worker-build`.
Signed-off-by: Anirudh Oppiliappan <anirudh@tangled.org>
wip: repo pages settings and cf r2/kv setup
Signed-off-by: Anirudh Oppiliappan <anirudh@tangled.org>