add tool for removing repo from badger cache

tools/db/main.go

@@ -0,0 +1,27 @@
+package main
+
+import (
+	"log"
+
+	"github.com/dgraph-io/badger/v2"
+)
+
+func main() {
+	// delete a repo from badger cache
+	db, err := badger.Open(badger.DefaultOptions("/usr/local/badger").WithTruncate(true))
+	if err != nil {
+		log.Fatal("ERROR: could not open badger db: ", err)
+	}
+
+	defer db.Close()
+
+	repo := "[repo]"
+
+	err = db.Update(func(txn *badger.Txn) error {
+		return txn.Delete([]byte("repos-" + repo))
+	})
+
+	if err != nil {
+		log.Fatal("Badger writing error:", err)
+	}
+}