feat(04-02): add render_uninstall and render_detect with Jinja2 templates

- render_uninstall(printer_name, driver_name, port_name): Remove-Printer/Driver/Port in safe order
- render_detect(printer_name): Get-Printer check with Write-Output + exit 0/1 Intune contract
- uninstall.ps1.j2: all Remove-* with -ErrorAction SilentlyContinue
- detect.ps1.j2: Intune detection contract template

imptune/templates/scripts/detect.ps1.j2

@@ -0,0 +1,8 @@
+# Generated by ImpTune — Detection script for {{ printer_name }}
+$printer = Get-Printer -Name "{{ printer_name }}" -ErrorAction SilentlyContinue
+if ($printer) {
+    Write-Output "Installed: {{ printer_name }}"
+    exit 0
+} else {
+    exit 1
+}