feat(auth): add database and auth token generation + storage

internal/database/database.go

@@ -0,0 +1,34 @@
+package database
+
+import (
+	"database/sql"
+	"log"
+
+	_ "github.com/glebarez/go-sqlite"
+)
+
+const FILENAME string = "storage.db"
+
+var database *sql.DB
+
+func OpenSQLite() error {
+	db, err := sql.Open("sqlite", FILENAME)
+	if err != nil {
+		return err
+	}
+	log.Println("Successfully connected to SQLite Database")
+	database = db
+	return nil
+}
+
+func InitDB() {
+	_, err := database.Exec(TOKENTABLECREATE)
+	if err != nil {
+		log.Fatal("Failed to init database:\n", err)
+	}
+	log.Println("Successfully initiated the Database!")
+}
+
+func Close() error {
+	return database.Close()
+}