fix(entrypoint): assimilate on Linux

If a Linux user has Wine installed with the `binfmt_misc` registration,
an APE binary is picked up and ran under the Wine runtime.

Normally, this does not occur, as we force execution under the launcher.

However, Python `sys.executable` will return the original binary so
any Python script that uses `sys.executable` with `subprocess` will
unexpectedly run under Wine.

Assimilating the binary on Linux avoids this situation. In all other cases
we can symlink to the binary.