chore: move some types to model

internal/model/ifile.go

@@ -0,0 +1,27 @@
+package model
+
+import (
+	"io"
+	"time"
+)
+
+type FileInfo interface {
+	GetSize() uint64
+	GetName() string
+	ModTime() time.Time
+	IsDir() bool
+}
+
+type FileStreamer interface {
+	io.ReadCloser
+	FileInfo
+	GetMimetype() string
+}
+
+type URL interface {
+	URL() string
+}
+
+type Thumbnail interface {
+	Thumbnail() string
+}