refactor(api): restructured API for type safety, maintainability and docs generation

- These changes makes the API incombatible with previous versions
- Added new types for error handling, success responses, and health checks.
- Updated health check logic to utilize the new types for better clarity and structure.
- Refactored existing handlers to improve response consistency and error handling.
- Updated Makefile to include a new target for generating API types from Swagger.
- Updated "new agent" API to respond an encrypted cert pair

internal/api/v1/health.go

@@ -4,19 +4,31 @@ import (
 	"net/http"
 	"time"
 
-	"github.com/gorilla/websocket"
-	"github.com/yusing/go-proxy/internal/net/gphttp"
-	"github.com/yusing/go-proxy/internal/net/gphttp/gpwebsocket"
+	"github.com/gin-gonic/gin"
 	"github.com/yusing/go-proxy/internal/net/gphttp/httpheaders"
+	"github.com/yusing/go-proxy/internal/net/gphttp/websocket"
 	"github.com/yusing/go-proxy/internal/route/routes"
 )
 
-func Health(w http.ResponseWriter, r *http.Request) {
-	if httpheaders.IsWebsocket(r.Header) {
-		gpwebsocket.Periodic(w, r, 1*time.Second, func(conn *websocket.Conn) error {
-			return conn.WriteJSON(routes.HealthMap())
+type HealthMap = map[string]routes.HealthInfo //	@name	HealthMap
+
+// @x-id				"health"
+// @BasePath		/api/v1
+// @Summary		Get routes health info
+// @Description	Get health info by route name
+// @Tags			v1,websocket
+// @Accept			json
+// @Produce		json
+// @Success		200	{object}	HealthMap "Health info by route name"
+// @Failure		403	{object}	apitypes.ErrorResponse
+// @Failure		500	{object}	apitypes.ErrorResponse
+// @Router			/health [get]
+func Health(c *gin.Context) {
+	if httpheaders.IsWebsocket(c.Request.Header) {
+		websocket.PeriodicWrite(c, 1*time.Second, func() (any, error) {
+			return routes.GetHealthInfo(), nil
 		})
 	} else {
-		gphttp.RespondJSON(w, r, routes.HealthMap())
+		c.JSON(http.StatusOK, routes.GetHealthInfo())
 	}
 }