Add updates module and fix issues

updates/file.go

@@ -0,0 +1,46 @@
+package updates
+
+// File represents a file from the update system.
+type File struct {
+	filepath string
+	version  string
+	stable   bool
+}
+
+func newFile(filepath string, version string, stable bool) *File {
+	return &File{
+		filepath: filepath,
+		version:  version,
+		stable:   stable,
+	}
+}
+
+// Path returns the filepath of the file.
+func (f *File) Path() string {
+	return f.filepath
+}
+
+// Version returns the version of the file.
+func (f *File) Version() string {
+	return f.version
+}
+
+// Stable returns whether the file is from a stable release.
+func (f *File) Stable() bool {
+	return f.stable
+}
+
+// Open opens the file and returns the
+func (f *File) Open() {
+
+}
+
+// ReportError reports an error back to Safing. This will not automatically blacklist the file.
+func (f *File) ReportError() {
+
+}
+
+// Blacklist notifies the update system that this file is somehow broken, and should be ignored from now on.
+func (f *File) Blacklist() {
+
+}