feat(auth): Add /token endpoint to request a access token

app/repositories/token.go

@@ -0,0 +1,10 @@
+package repositories
+
+import (
+	"git.secnex.io/secnex/oauth2-api/database"
+	"git.secnex.io/secnex/oauth2-api/models"
+)
+
+func CreateToken(token *models.Token) error {
+	return database.DB.Create(token).Error
+}