Add device agent library

Provide enrollment, elevated install, posture checks, keystore, and
system-tray helpers shared by the probo-agent binary.

Signed-off-by: Ludovic Vielle <ludovic@probo.com>

pkg/deviceagent/config_paths_windows.go

@@ -35,3 +35,14 @@ func DefaultConfigDir() string {
 
 	return filepath.Join(programData, "Probo", "agent")
 }
+
+// DefaultEnrollmentRunDir returns the runtime directory for the public
+// enrollment marker on Windows.
+func DefaultEnrollmentRunDir() string {
+	programData := os.Getenv("ProgramData")
+	if programData == "" {
+		programData = `C:\ProgramData`
+	}
+
+	return filepath.Join(programData, "Probo", "run")
+}