link: windows: look for more DLL import lib path names
link: windows: look for more DLL import lib path names

When linking with -lfoo syntax, this indicates to Zig that the
dependency should either be provided by Zig, or it should be dynamically
provided by the system.

For windows-gnu targets, the search path was "foo.lib". Now it
additionally looks for "libfoo.dll.a".

Closes #7799

andrewrk/zig,zig-lang/zig,zig-lang/zig,zig-lang/zig,andrewrk/zig