Add an option to create zip files using 7z

In zip (defined in lib/RBM/DefaultConfig.pm) we use the zip command to create zip files.

In tickets like #41080 it would be useful to have an option to use 7z instead.

/cc @pierov

added Build System Doing labels

assigned to @boklm

mentioned in merge request !57 (merged)

mentioned in merge request !58 (merged)

closed with merge request !58 (merged)

marked this issue as related to tor-browser-build#41074 (closed)

marked this issue as related to tor-browser-build#41075 (closed)

marked this issue as related to tor-browser-build#41080 (closed)