add tests for thumb interworking

[folkertdev]

fixes #151946

thumb programs (using a 16-bit instruction encoding) can call arm (32-bit instruction encoding) code. Doing so requires switching from thumb mode to arm mode, executing, then switching back. Test that this happens correctly, in particular for naked functions.

cc @thejpster can you confirm the output looks good here and that we're testing all of the relevant things
r? jieyouxu because this is doing some interesting things testing-wise

I believe that we need run-make here because we need to look at the assembly after the linker has run. It will correct calls from thumb to arm: depending on the thumb version this either uses a special instruction or inserts a call to a thunk that handles switching between thumb and arm mode.