chore: allow Access-Control-Allow-Origin when health check

.gitignore

@@ -3,7 +3,9 @@ runtime/
 .env
 dist/
 config.*.toml
+config.toml
 db/geecaptcha.db
 captcha-bot
 dict/dec_*
-.vscode
+.vscode
+vendor

main.go

@@ -2,14 +2,14 @@ package main
 
 import (
 	"fmt"
-	"net/http"
-
 	"github.com/assimon/captcha-bot/bootstrap"
+	"net/http"
 )
 
 func main() {
 	go func() {
 		http.HandleFunc("/healthz", func(w http.ResponseWriter, r *http.Request) {
+			w.Header().Set("Access-Control-Allow-Origin", "*")
 			fmt.Fprintf(w, "OK")
 		})
 		http.ListenAndServe(":80", nil)