feat(labrinth): database seed data fixtures for better installation and testing (#4132)

* feat(labrinth): database seed data fixtures for better installation and testing

* chore(labrinth): simplify and fixup seed data fixture

* docs(contributing/labrinth): enable all useful features for `sqlx-cli` install

* chore(docs/labrinth): fix typo

* chore(docs/labrinth): fix `cargo fmt` parameter typo

* chore: replace Labrinth -> labrinth

packages/app-lib/src/api/profile/mod.rs

@@ -763,7 +763,7 @@ pub async fn try_update_playtime(path: &str) -> crate::Result<()> {
     let updated_recent_playtime = profile.recent_time_played;
 
     let res = if updated_recent_playtime > 0 {
-        // Create update struct to send to Labrinth
+        // Create update struct to send to labrinth
         let modrinth_pack_version_id =
             profile.linked_data.as_ref().map(|l| l.version_id.clone());
         let playtime_update_json = json!({

packages/app-lib/src/state/mr_auth.rs

@@ -198,7 +198,7 @@ pub async fn finish_login_flow(
     semaphore: &FetchSemaphore,
     exec: impl sqlx::Executor<'_, Database = sqlx::Sqlite>,
 ) -> crate::Result<ModrinthCredentials> {
-    // The authorization code actually is the access token, since Labrinth doesn't
+    // The authorization code actually is the access token, since labrinth doesn't
     // issue separate authorization codes. Therefore, this is equivalent to an
     // implicit OAuth grant flow, and no additional exchanging or finalization is
     // needed. TODO not do this for the reasons outlined at