chore: add API key ID to interceptions (#20513)

Adds APIKeyID to interceptions.
Needed for tracking API key usage with bridge.
fixes https://github.com/coder/coder/issues/20001

coderd/database/migrations/000396_add_aibridge_interceptions_api_key_id.down.sql

@@ -0,0 +1 @@
+ALTER TABLE aibridge_interceptions DROP COLUMN api_key_id;

coderd/database/migrations/000396_add_aibridge_interceptions_api_key_id.up.sql

@@ -0,0 +1,2 @@
+  -- column is nullable to not break interceptions recorded before this column was added
+ALTER TABLE aibridge_interceptions ADD COLUMN api_key_id text;