Refactor code_indexer to use an SearchOptions struct for PerformSearch (#29724)

similar to how it's already done for the issue_indexer

---
*Sponsored by Kithara Software GmbH*

Conflicts:
	routers/web/repo/search.go

routers/web/user/code.go

@@ -6,6 +6,7 @@ package user
 import (
 	"net/http"
 
+	"code.gitea.io/gitea/models/db"
 	repo_model "code.gitea.io/gitea/models/repo"
 	"code.gitea.io/gitea/modules/base"
 	code_indexer "code.gitea.io/gitea/modules/indexer/code"
@@ -75,7 +76,16 @@ func CodeSearch(ctx *context.Context) {
 	)
 
 	if len(repoIDs) > 0 {
-		total, searchResults, searchResultLanguages, err = code_indexer.PerformSearch(ctx, repoIDs, language, keyword, page, setting.UI.RepoSearchPagingNum, isFuzzy)
+		total, searchResults, searchResultLanguages, err = code_indexer.PerformSearch(ctx, &code_indexer.SearchOptions{
+			RepoIDs:        repoIDs,
+			Keyword:        keyword,
+			IsKeywordFuzzy: isFuzzy,
+			Language:       language,
+			Paginator: &db.ListOptions{
+				Page:     page,
+				PageSize: setting.UI.RepoSearchPagingNum,
+			},
+		})
 		if err != nil {
 			if code_indexer.IsAvailable(ctx) {
 				ctx.ServerError("SearchResults", err)