Feature request: C23's #embed preprocessor directive

[leha-bot]

See https://github.com/cplusplus/papers/issues/700

TL;DR: It allows to include any external binary data into your executable.

see also @ThePhD 's blog posts about this: https://thephd.dev/embed-the-details ; https://thephd.dev/finally-embed-in-c23 and their test library for this feature: github.com/ThePhD/embed

Many thanks for your project and keep moving on <3

When implementing this, see TODO[#174] in the sources.