1290995 - Add early hook for PSGI manipulations

Status: NEW

(Bugzilla :: Bugzilla-General, enhancement, P3)

Description

[Dylan Hardison [:dylan] (he/him)]

It would be nice for extensions to be able to add paths to the $static_paths in app.psgi.

Around https://github.com/bugzilla/bugzilla/blob/master/app.psgi#L41,
we should call:

Bugzilla::Hook::process('psgi_setup') and pass in the list of static paths
as an array reference so that the new psgi_setup hook can modify it.
It should be possible to run other plack middleware from this hook too, which may prove very useful.