modules/common: add manifest v1 CUE file for validation

manifest/v1.cue

@@ -0,0 +1,31 @@
+#path_string: string & =~ "^/"
+#file_string: #path_string & =~ "[^/]$"
+#octal_string: string & =~ "^[0-7]{3,4}$"
+
+#HjemFile: {
+	type!: string
+	source?: #path_string
+	target!: #path_string
+	clobber?: bool
+	permissions?: #octal_string
+	uid?: int & >=0
+	gid?: int & >=0
+	deactivate?: bool
+} & ({
+	type: "copy"
+	target!: #file_string
+	source!: #file_string
+	...
+} | {
+	type: "symlink"
+	source!: _
+	...
+} | {
+	type: "delete" | "directory" | "modify"
+	...
+})
+
+{
+	version: 1
+	files: [...#HjemFile]
+}