Creating migrations files to create movies table and add movies check constraints. Updating API version number. Updating README.md adding 'SQL Migrations' section. Updating deployment file to make migrations before building API. Adding some .idea files into .gitignore.

migrations/000001_create_movies_table.up.sql

@@ -0,0 +1,9 @@
+CREATE TABLE IF NOT EXISTS movies (
+    id bigserial PRIMARY KEY,
+    created_at timestamp(0) with time zone NOT NULL DEFAULT NOW(),
+    title text NOT NULL,
+    year integer NOT NULL,
+    runtime integer NOT NULL,
+    genres text[] NOT NULL,
+    version integer NOT NULL DEFAULT 1
+);