feat: database user creation && readme explanation

internal/api/routes/auth.go

@@ -31,11 +31,21 @@ func RegisterAuthRoutes(cfg *types.StereoConfig, api *gin.RouterGroup) {
 			panic(err)
 		}
 
-		c.String(http.StatusOK, jwt)
+		res := cfg.Database.FirstOrCreate(&user)
+
+		if res.Error != nil {
+			panic(res.Error)
+		}
+
+		// TODO: redirect to dashboard
+		c.JSON(http.StatusOK, gin.H{
+			"jwt":   jwt,
+			"known": res.RowsAffected == 0,
+		})
 	})
 
 	api.GET("/auth/me", auth.JwtMiddleware(cfg.JWTSecret), func(c *gin.Context) {
-        claims, _ := c.Get("claims")
+		claims, _ := c.Get("claims")
 		c.JSON(http.StatusOK, claims)
 	})
 }