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/config/config.go

@@ -210,7 +210,7 @@ func (cfg *Config) StartServers(opts ...*StartServersOptions) {
 			Name:         "api",
 			CertProvider: cfg.AutoCertProvider(),
 			HTTPAddr:     common.APIHTTPAddr,
-			Handler:      api.NewHandler(cfg),
+			Handler:      api.NewHandler(),
 		})
 	}
 }

internal/config/query.go

@@ -3,6 +3,7 @@ package config
 import (
 	config "github.com/yusing/go-proxy/internal/config/types"
 	"github.com/yusing/go-proxy/internal/route/provider"
+	"github.com/yusing/go-proxy/internal/types"
 )
 
 func (cfg *Config) DumpRouteProviders() map[string]*provider.Provider {
@@ -25,9 +26,9 @@ func (cfg *Config) RouteProviderList() []config.RouteProviderListResponse {
 }
 
 func (cfg *Config) Statistics() map[string]any {
-	var rps, streams provider.RouteStats
+	var rps, streams types.RouteStats
 	var total uint16
-	providerStats := make(map[string]provider.ProviderStats)
+	providerStats := make(map[string]types.ProviderStats)
 
 	for _, p := range cfg.providers.Range {
 		stats := p.Statistics()

internal/config/types/config.go

@@ -45,7 +45,7 @@ type (
 	RouteProviderListResponse struct {
 		ShortName string `json:"short_name"`
 		FullName  string `json:"full_name"`
-	}
+	} // @name RouteProvider
 	ConfigInstance interface {
 		Value() *Config
 		Reload() gperr.Error