Database basic CRUD (#27)

* started schema

* db schemas beginning

* first db schema gen

* added sqlc generation with go generate and sqlite driver

* i think these dependencies are needed

* added IF NOT EXISTS to create and CRUD for each table

* fixed missing columns

* added missing field

* fixed code generation with sqlc

backend/database/sql/schemas/recordings.sql

@@ -0,0 +1,7 @@
+CREATE TABLE IF NOT EXISTS recordings (
+  id   int PRIMARY KEY,
+  name text    NOT NULL,
+  artist_credit_id int NOT NULL,
+  FOREIGN KEY(artist_credit_id) REFERENCES artist_credit(id)
+);
+