Migrate to SQLite for Internal Launcher Data (#1300)

* initial migration

* barebones profiles

* Finish profiles

* Add back file watcher

* UI support progress

* Finish most of cache

* Fix options page

* Fix forge, finish modrinth auth

* Accounts, process cache

* Run SQLX prepare

* Finish

* Run lint + actions

* Fix version to be compat with windows

* fix lint

* actually fix lint

* actually fix lint again

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

@@ -0,0 +1,31 @@
+use crate::state::DirectoryInfo;
+use sqlx::migrate::MigrateDatabase;
+use sqlx::sqlite::SqlitePoolOptions;
+use sqlx::{Pool, Sqlite};
+
+pub(crate) async fn connect() -> crate::Result<Pool<Sqlite>> {
+    let settings_dir = DirectoryInfo::get_initial_settings_dir().ok_or(
+        crate::ErrorKind::FSError(
+            "Could not find valid config dir".to_string(),
+        ),
+    )?;
+
+    if !settings_dir.exists() {
+        crate::util::io::create_dir_all(&settings_dir).await?;
+    }
+
+    let uri = format!("sqlite:{}", settings_dir.join("app.db").display());
+
+    if !Sqlite::database_exists(&uri).await? {
+        Sqlite::create_database(&uri).await?;
+    }
+
+    let pool = SqlitePoolOptions::new()
+        .max_connections(100)
+        .connect(&uri)
+        .await?;
+
+    sqlx::migrate!().run(&pool).await?;
+
+    Ok(pool)
+}