feat: Add audit logging (#38189)

Co-authored-by: bircni <bircni@users.noreply.github.com>
Co-authored-by: wxiaoguang <wxiaoguang@gmail.com>

routers/private/internal.go

@@ -10,6 +10,7 @@ import (
 	"net/http"
 	"strings"
 
+	audit_model "gitea.dev/models/audit"
 	"gitea.dev/modules/log"
 	"gitea.dev/modules/private"
 	"gitea.dev/modules/setting"
@@ -74,6 +75,7 @@ func Routes() *web.Router {
 	// Log the real ip address of the request from SSH is really helpful for diagnosing sometimes.
 	// Since internal API will be sent only from Gitea sub commands and it's under control (checked by InternalToken), we can trust the headers.
 	r.AfterRouting(setRealIP)
+	r.AfterRouting(common.AuditOrigin(audit_model.OriginSystem))
 
 	r.Get("/dummy", misc.DummyOK)
 	r.Post("/ssh/authorized_keys", AuthorizedPublicKeyByContent)