rpi-imager: add page (#8552)

* rpi-imager: add page

* Update pages/common/rpi-imager.md

pages/common/rpi-imager.md

@@ -0,0 +1,16 @@
+# rpi-imager
+
+> Flash images onto storage devices.
+> More information: <https://github.com/raspberrypi/rpi-imager>.
+
+- Write a specific image to a specific block device:
+
+`rpi-imager --cli {{path/to/image.zip}} {{/dev/sdX}}`
+
+- Write a specific image to a block device, disabling the checksum verification:
+
+`rpi-imager --cli --disable-verify {{path/to/image.zip}} {{/dev/sdX}}`
+
+- Write a specific image to a block device, which will expect a specific checksum when running the verification:
+
+`rpi-imager --cli --sha256 {{expected_hash}} {{path/to/image.zip}} {{/dev/sdX}}`