#14 nativ file archiv support

[corn]

add out of the box access to file archives (like zip, lha,
lzx ..) to be handled as normal drawers (like in dopus)

[Nobody/Anonymous]

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Additionally to handling the archives as normal drawers (and
possibily being able to add/remove files from the archive,
like in dopus), I'd like to be able to extract them with
the click-m-click sequence.

Andrea