idevice*, iproxy: add pages (#14363)

Co-authored-by: Juri Dispan <juri.dispan@posteo.net>
Co-authored-by: Wiktor Perskawiec <git@spageektti.cc>
Co-authored-by: Sebastiaan Speck <12570668+sebastiaanspeck@users.noreply.github.com>

pages/common/ideviceimagemounter.md

@@ -0,0 +1,12 @@
+# ideviceimagemounter
+
+> Mount disk images on an iOS device.
+> More information: <https://manned.org/ideviceimagemounter>.
+
+- Mount a disk image on the connected device:
+
+`ideviceimagemounter {{path/to/image_file}} {{path/to/signature_file}}`
+
+- List currently mounted disk images:
+
+`ideviceimagemounter --list`