feat(sequencer)!: implement BridgeTransfer action (#1934)

## Summary
implement `BridgeTransfer` action which transfers funds from one bridge
account to another. essentially, it atomically performs a `BridgeUnlock`
and a `BridgeLock`.

## Background
this is functionality we want and `BridgeUnlock`ing to another bridge
account wouldn't create a `Deposit` correctly. the issue is that
`BridgeUnlock` does not contain all the information needed to create a
deposit event, namely `destination_chain_address`, so `BridgeUnlock`
directly into another bridge account doesn't work as a lock.
`BridgeLock` from a bridge account to another also doesn't contain the
desired withdrawal information (eg `rollup_withdrawal_event_id`). an
atomic `BridgeUnlock`/`BridgeLock` combo would only work if the
`BridgeUnlock` unlocks the funds to itself, providing
`rollup_withdrawal_event_id`, and then `BridgeLock`s to the receiving
account. `BridgeUnlock` cannot go directly into a different account as
the bridge would no longer be able to access it. however this seems
unwieldly as opposed to just having one action which makes the intention
clear.

## Changes
- slightly refactor `BridgeUnlock` to move checks to their own function
- also slightly refactor `BridgeLock` to move execution and `Deposit`
emission to their own function
- implement `BridgeTransfer` action using existing `BridgeUnlock` checks
and `BridgeLock` execution logic.

## Testing
unit tests

## Changelogs
Changelogs updated.

## Breaking Changelist
- a new action was added, which is a breaking sequencer change.

## Related Issues

closes #1921

crates/astria-core/CHANGELOG.md

@@ -15,6 +15,7 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 - Add method `TracePrefixed::leading_channel` to read the left-most channel of
   a trace prefixed ICS20 asset [#1768](https://github.com/astriaorg/astria/pull/1768).
 - Add `impl Protobuf for Address<Bech32m>` [#1802](https://github.com/astriaorg/astria/pull/1802).
+- Add `BridgeTransfer` action and `BridgeTransfer` variant to `FeeChange`.
 
 ### Changed