Refactor ActivityPub integration and add SQLite federation support

- Removed event-publisher dependency from Cargo.lock and Cargo.toml.
- Introduced sqlite-federation crate with necessary dependencies and implementation.
- Updated activitypub crate to use new ActivityPubPort trait for better abstraction.
- Refactored event handling to utilize domain ports instead of direct dependencies.
- Adjusted presentation layer to accommodate new ActivityPub service structure.
- Removed unused test setup for ActivityPub service in favor of NoopActivityPubService.
- Cleaned up SQLite adapter to remove unnecessary dependencies and streamline functionality.

crates/adapters/sqlite-federation/Cargo.toml

@@ -0,0 +1,15 @@
+[package]
+name = "sqlite-federation"
+version = "0.1.0"
+edition = "2024"
+
+[dependencies]
+sqlx = { workspace = true }
+activitypub = { workspace = true }
+activitypub-base = { workspace = true }
+domain = { workspace = true }
+anyhow = { workspace = true }
+uuid = { workspace = true }
+chrono = { workspace = true }
+tracing = { workspace = true }
+async-trait = { workspace = true }