fix: added sql for initializing db

sql/initdb.sql

@@ -0,0 +1,33 @@
+CREATE TABLE IF NOT EXIXST users (
+  id int primary key,
+  name varchar(80),
+  password varchar(80),
+);
+
+CREATE TABLE IF NOT EXIST games (
+  id int primary key,
+  name varchar(80),
+);
+
+CREATE TABLE IF NOT EXIST courses (
+  id int primary key,
+  name varchar(80),
+  game_id int references games(id),
+);
+
+CREATE TABLE IF NOT EXIST standards (
+  id int primary key,
+  name varchar(50),
+  tier varchar(3),
+  points numeric,
+  game_id int references games(id),
+  course_id int references courses(id),
+);
+
+CREATE TABLE IF NOT EXIST times (
+  id int primary key,
+  game_id int references games(id),
+  course_id int references courses(id),
+  timems varchar(80),
+  date date,
+);