xxtools: convert to git-repo external type

.chezmoiexternal.toml

@@ -11,8 +11,6 @@ url = "https://raw.githubusercontent.com/Crissium/variety-daily-verse/master/ver
 refreshPeriod = "168h"
 
 [".local/share/xxtools"]
-type = "archive"
-url = "https://github.com/Piraty/xxtools/archive/master.tar.gz"
-exact = true
-stripComponents = 1
+type = "git-repo"
+url = "https://github.com/Piraty/xxtools.git"
 refreshPeriod = "168h"