Fixes for "cargo make build" and "cargo make check" on windows

[noise64]

Various smaller fixes related to windows to make work cargo make check and cargo make build.

As a temporary solution (until we decide on the soozu dep) this change skips the proxy part of the golem start command, meaning it can be compiled, but won't work. This solution was chosen, because

• it is not to easy to exclude some projects based on platfrom
• at least some parts are still checked for compile on win, until we find a better solution.
• requries no special action / exclude to be done by developers on windows

NOTE: it seem i had to decrease cargo jobs to 12 to make it reliable work with 32 GB (maybe more also can work, will test it later)