feat: bodies stage (#190)

* chore: clean up `.gitignore`

* fix: make RO cursors `Send + Sync`

* feat(wip): bodies stage

* driveby: improve docs

* chore: don't panic if we're the first stage

* chore: use `Vec` for ommers

* feat: error handling in bodies downloader

* chore: remove stale comment

* chore: pascal-case stage id

* refactor: remove unused new fns

* refactor: distinguish downloaders with prefix

* refactor: move downloader errs to own module

* refactor: `stream_bodies` -> `bodies_stream`

* test: fix borked imports in header stage

* test: clean up header tests

* test: add basic body stage tests

* test: add 2 more body stage test skeletons

* test: move generator test utils to own module

* refactor: move proof functions to primitives crate

* feat: add block generator test utils

* test: more body stage tests

* chore: fix typo (`Cannonical*` -> `Canonical`)

* docs: document `bodies_to_download`

* test: more body stage tests

* test: more body stage tests

* refactor: clean up body stage tests a bit

* test: fix broken tests

* refactor: clean up body stage tests

* test: more body stage tests

crates/net/ecies/src/lib.rs

@@ -34,7 +34,7 @@ pub enum EgressECIESValue {
 #[derive(Clone, Debug, PartialEq, Eq)]
 /// Raw ingress values for an ECIES protocol
 pub enum IngressECIESValue {
-    /// Receiving a message from a [`peerId`]
+    /// Receiving a message from a [`PeerId`]
     AuthReceive(PeerId),
     /// Receiving an ACK message
     Ack,