Detect more types of split zip archives

Detect more types of split zip archives

* lisp/arc-mode.el (archive-find-type): Detect more types of
split zip archives.
* test/lisp/arc-mode-tests.el (arc-mode-test-make-file)
(arc-mode-test-make-archive): Factor out functions from ...
(arc-mode-test-zip-ensure-ext): ... this test.
(define-arc-mode-test-on-type): Add macro to test function
`archive-find-type' and use the macro to test detection of
various archive types.  (Bug 77898)

(cherry picked from commit d74cbf0519edff34f334b62b4f163e98d51336e0)