OAuth 2.0 Authorization Server [MOD-559] (#733)

* WIP end-of-day push

* Authorize endpoint, accept endpoints, DB stuff for oauth clients, their redirects, and client authorizations

* OAuth Client create route

* Get user clients

* Client delete

* Edit oauth client

* Include redirects in edit client route

* Database stuff for tokens

* Reorg oauth stuff out of auth/flows and into its own module

* Impl OAuth get access token endpoint

* Accept oauth access tokens as auth and update through AuthQueue

* User OAuth authorization management routes

* Forgot to actually add the routes lol

* Bit o cleanup

* Happy path test for OAuth and minor fixes for things it found

* Add dummy data oauth client (and detect/handle dummy data version changes)

* More tests

* Another test

* More tests and reject endpoint

* Test oauth client and authorization management routes

* cargo sqlx prepare

* dead code warning

* Auto clippy fixes

* Uri refactoring

* minor name improvement

* Don't compile-time check the test sqlx queries

* Trying to fix db concurrency problem to get tests to pass

* Try fix from test PR

* Fixes for updated sqlx

* Prevent restricted scopes from being requested or issued

* Get OAuth client(s)

* Remove joined oauth client info from authorization returns

* Add default conversion to OAuthError::error so we can use ?

* Rework routes

* Consolidate scopes into SESSION_ACCESS

* Cargo sqlx prepare

* Parse to OAuthClientId automatically through serde and actix

* Cargo clippy

* Remove validation requiring 1 redirect URI on oauth client creation

* Use serde(flatten) on OAuthClientCreationResult

tests/files/dummy_data.sql

@@ -45,6 +45,25 @@ INSERT INTO categories (id, category, project_type) VALUES
     (106, 'mobs', 2),
     (107, 'optimization', 2);
 
+-- Create dummy oauth client, secret_hash is SHA512 hash of full lowercase alphabet
+INSERT INTO oauth_clients (
+        id,
+        name,
+        icon_url,
+        max_scopes,
+        secret_hash,
+        created_by
+    )
+VALUES (
+        1,
+        'oauth_client_alpha',
+        NULL,
+        $1,
+        '4dbff86cc2ca1bae1e16468a05cb9881c97f1753bce3619034898faa1aabe429955a1bf8ec483d7421fe3c1646613a59ed5441fb0f321389f77f48a879c7b1f1',
+        3
+    );
+INSERT INTO oauth_client_redirect_uris (id, client_id, uri) VALUES (1, 1, 'https://modrinth.com/oauth_callback');
+
 -- Create dummy data table to mark that this file has been run
 CREATE TABLE dummy_data ( 
     update_id bigint PRIMARY KEY