Packages stop all tests from running

[SamTebbs33]

#324 introduced packages for the architecture files and common files, but this prevented all tests from running, probably because it circumvented zig's imported file detection. Currently only the fat32 tests are being run because they are explicitly being included in kmain.zig.

[SamTebbs33]

We may need to revert #324 just so we get testing going before we think of a solution.