feat: create initial database schema

sql/migrations/20240129183014_create_url_table.sql

@@ -0,0 +1,4 @@
+-- Create "urls" table
+CREATE TABLE "public"."urls" ("id" serial NOT NULL, "hash" text NOT NULL, "long_url" text NOT NULL, PRIMARY KEY ("id"));
+-- Create index "urls_hash_key" to table: "urls"
+CREATE UNIQUE INDEX "urls_hash_key" ON "public"."urls" ("hash");

sql/migrations/atlas.sum

@@ -0,0 +1,2 @@
+h1:iaq5N24NlZigxTmAlrTtB5kyXb52a+gVSEHYpfgvvwE=
+20240129183014_create_url_table.sql h1:k/l+yABFDePCCXnnZ4OM9k47oE4CdvvN6tjSCZelAo0=

sql/query.sql

@@ -0,0 +1,3 @@
+-- name: GetURLByHash :one
+SELECT * FROM urls
+WHERE hash = $1;

sql/schema.sql

@@ -0,0 +1,5 @@
+CREATE TABLE urls (
+  id SERIAL PRIMARY KEY,
+  hash TEXT NOT NULL UNIQUE,
+  long_url TEXT NOT NULL
+);