feat(build): uniform ini parsing (#7429)

- Use the existing ini parser for the `lint-locale` and `lint-locale-usage` tooling.
- This discovered that the previous ini parser was not correctly parsing certain types of string, specifically those with `;` as it's seen as a comment. It now properly 'unescapes' that and is not seen as a comment break.
- Discovered-by: @fogti

Reviewed-on: https://codeberg.org/forgejo/forgejo/pulls/7429
Reviewed-by: Earl Warren <earl-warren@noreply.codeberg.org>
Co-authored-by: Gusted <postmaster@gusted.xyz>
Co-committed-by: Gusted <postmaster@gusted.xyz>

modules/translation/localeiter/utils.go

@@ -10,17 +10,12 @@ import (
 	"encoding/json" //nolint:depguard
 	"fmt"
 
-	"gopkg.in/ini.v1" //nolint:depguard
+	"forgejo.org/modules/setting"
 )
 
 func IterateMessagesContent(localeContent []byte, onMsgid func(string, string) error) error {
-	// Same configuration as Forgejo uses.
-	cfg := ini.Empty(ini.LoadOptions{
-		IgnoreContinuation: true,
-	})
-	cfg.NameMapper = ini.SnackCase
-
-	if err := cfg.Append(localeContent); err != nil {
+	cfg, err := setting.NewConfigProviderForLocale(localeContent)
+	if err != nil {
 		return err
 	}