RFC: oscamstatus should be optional

I personally prefer to install by myself the plugins and as for oscam, I think that this commit is debatable:

https://github.com/OpenPLi/openpli-oe-core/commit/c758e7345ee1e0329d171e520261ed1a0d688517#diff-4ca652282877e9855391a59bc0008d32cddcfc2d118bc3ae02bd4f1a0ca42b4d

Modified by successive commits but still in RRECOMMENDS so installed by default when installing oscam.

I really don't need that: there is already an oscam entry in the 'blue key' extension menu.