Expose test utils to Labrinth dependents (#4703)

* Expose test utils to Labrinth dependents

* Feature gate `labrinth::test`

* Unify db migrators

* Expose `NotificationBuilder::insert_many_deliveries`

* Add logging utils to common crate

* Remove unused console-subscriber layer

* fix CI

apps/labrinth/src/test/api_common/request_data.rs

@@ -0,0 +1,24 @@
+// The structures for project/version creation.
+// These are created differently, but are essentially the same between versions.
+
+use crate::util::actix::MultipartSegment;
+
+use crate::test::dummy_data::TestFile;
+
+pub struct ProjectCreationRequestData {
+    pub slug: String,
+    pub jar: Option<TestFile>,
+    pub segment_data: Vec<MultipartSegment>,
+}
+
+pub struct VersionCreationRequestData {
+    pub version: String,
+    pub jar: Option<TestFile>,
+    pub segment_data: Vec<MultipartSegment>,
+}
+
+pub struct ImageData {
+    pub filename: String,
+    pub extension: String,
+    pub icon: Vec<u8>,
+}