Create common-sonar-L04xMTW-GL04xMT.rst

[AlksSAV]

No description provided.

[AlksSAV]

Added support for new sonars. More information on the discuss.ardupilot.

[Hwurzburg]

cant have whitespace in filename....also document not in a TOCtree....needs addition on rangefinder landing page TOCtree and squash to one commit

[rmackay9]

Hi, thanks for this. I think it would be easier for users if the driver was written in Lua avoiding the need for the external arduino board but in any case these instructions allow users (with some effort) to use previously unusable underwater sonar

[AlksSAV]

@rmackay9! If I succeed, I will try to do it in a LUA script.
@Hwurzburg I changed the name of the image and added it to the list. Could you squash the commit I've tried, I'm having trouble with something.

[Hwurzburg]

you probably needed to rebase on master before trying to squash the 8 commits....I've squashed and pushed back....and will merge once CI passes again (it does locally)