feat: Implement list info, and drop commands

Save Sync now has persistent storage. Currently, you can add new Saves,
Remove them, and get info about them. The part of CRUD that is remaining
is Update. Documentation needs to be written, a lot of the public API
changed.

migrations/2021-03-02-025744_create_game_save_loc_table/up.sql

@@ -1,7 +1,7 @@
 -- Your SQL goes here
 CREATE TABLE game_save_location (
-    id INTEGER PRIMARY KEY,
-    friendly_name TEXT -- This can be null
-    original_PATH BLOB NOT NULL,
+    id INTEGER PRIMARY KEY NOT NULL,
+    friendly_name TEXT, -- This can be null
+    original_path TEXT NOT NULL,
     uuid BLOB NOT NULL
 )