Add Support to Follow Symlinks and LFS (#114)

close #79
close #80
close #91

Co-authored-by: 6543 <6543@obermui.de>
Reviewed-on: https://codeberg.org/Codeberg/pages-server/pulls/114

server/gitea/cache.go

@@ -0,0 +1,12 @@
+package gitea
+
+type FileResponse struct {
+	Exists   bool
+	ETag     []byte
+	MimeType string
+	Body     []byte
+}
+
+func (f FileResponse) IsEmpty() bool {
+	return len(f.Body) != 0
+}