feat(rules): add post-request rules system with response manipulation (#160)

* Add comprehensive post-request rules support for response phase
* Enable response body, status, and header manipulation via set commands
* Refactor command handlers to support both request and response phases
* Implement response modifier system for post-request template execution
* Support response-based rule matching with status and header checks
* Add comprehensive benchmarks for matcher performance
* Refactor authentication and proxying commands for unified error handling
* Support negated conditions with !
* Enhance error handling, error formatting and validation
* Routes: add `rule_file` field with rule preset support
* Environment variable substitution: now supports variables without `GODOXY_` prefix

* new conditions:
  * `on resp_header <key> [<value>]`
  * `on status <status>`
* new commands:
  * `require_auth`
  * `set resp_header <key> <template>`
  * `set resp_body <template>`
  * `set status <code>`
  * `log <level> <path> <template>`
  * `notify <level> <provider> <title_template> <body_template>`

internal/route/rules/presets/embed.go

@@ -0,0 +1,48 @@
+package rulepresets
+
+import (
+	"embed"
+	"reflect"
+	"sync"
+
+	"github.com/rs/zerolog/log"
+	"github.com/yusing/godoxy/internal/route/rules"
+	"github.com/yusing/godoxy/internal/serialization"
+)
+
+//go:embed *.yml
+var fs embed.FS
+
+var rulePresets = make(map[string]rules.Rules)
+
+var once sync.Once
+
+func GetRulePreset(name string) (rules.Rules, bool) {
+	once.Do(initPresets)
+	rules, ok := rulePresets[name]
+	return rules, ok
+}
+
+// init all rule presetsl lazily
+func initPresets() {
+	files, err := fs.ReadDir(".")
+	if err != nil {
+		log.Error().Err(err).Msg("failed to read rule presets")
+		return
+	}
+	for _, file := range files {
+		var rules rules.Rules
+		content, err := fs.ReadFile(file.Name())
+		if err != nil {
+			log.Error().Str("name", file.Name()).Err(err).Msg("failed to read rule preset")
+			continue
+		}
+		_, err = serialization.ConvertString(string(content), reflect.ValueOf(&rules))
+		if err != nil {
+			log.Error().Str("name", file.Name()).Err(err).Msg("failed to unmarshal rule preset")
+			continue
+		}
+		rulePresets[file.Name()] = rules
+		log.Debug().Str("name", file.Name()).Msg("loaded rule preset")
+	}
+}

internal/route/rules/presets/webui.yml

@@ -0,0 +1,17 @@
+- name: login page
+  on: path /login
+  do: pass
+- name: protected
+  on: |
+    !path regex("(_next/static|_next/image|favicon.ico).*")
+    !path glob("/api/v1/auth/*")
+    !path /api/v1/version
+  do: require_auth
+- name: proxy to backend
+  on: path glob("/api/v1/*")
+  do: proxy http://${API_ADDR}/
+- name: proxy to auth api
+  on: path glob("/auth/*")
+  do: |
+    rewrite /auth /api/v1/auth
+    proxy http://${API_ADDR}/