add collecting of filemetadata for a given source

types/types.go

@@ -0,0 +1,16 @@
+package types
+
+import "time"
+
+const (
+	AppName = "ForeverFiles"
+)
+
+type FileMetadata struct {
+	Name         string
+	Path         string
+	Size         int64
+	Hash         []byte
+	ModifiedDate time.Time
+	BackedUp     bool
+}