chore/fix: add CI for more platforms and targets, fix build error on 32bit systems

[Frando]

This adds more CI workflows (adapted from iroh):

• Build and test on mac OS
• Build and test on windows
• Build and test on android (aarch64 and armv7)
• Cross-compile and test on i686 (32bit) linux, armv7 linux, aarch64 linux
• Run cargo fmt and cargo clippy checks
• Use nextest for running tests (runs test in parallel, much faster)
• Runs only fuzz tests on nightly, all others on stable

apart from the CI workflow this

• fixes build failures on 32bit systems by using u64 not usize in more places
• tries to fix some unused import warnings wrt syncify (but failed, added an allow - will have to be revisited)

All green now!

[AljoschaMeyer]

tries to fix some unused import warnings wrt syncify (but failed, added an allow - will have to be revisited)

This is due to how syncify works: you place those syncify_replace annotations on a use, but they get copied into the non-syncified code (i.e., the original version of the code gets copied completely untouched, retaining those annotations).

The principled solution would be to modify the syncify macro to drop all syncify_replace annotations in its async output. So running a VisitMut over input_mod just before line 27 here. I can add that some time later (might be up to two weeks till I can do proper coding again).

[Frando]

This is due to how syncify works: you place those syncify_replace annotations on a use, but they get copied into the non-syncified code (i.e., the original version of the code gets copied completely untouched, retaining those annotations).

Right, makes sense to me now. So for now the allow is the correct solution then, and we can remove it once syncify removes the import (but not a priority IMO).

[AljoschaMeyer]

Re Ord on Entry again: the sideloading protocol defines a total order on entries to use (entries "being prior" to others): https://willowprotocol.org/specs/sideloading/index.html#sideload_protocol

The implementation of Ord should implement that order, and refer to it in the doc comment. Sorry, I forgot about that order earlier.

[sgwilym]

It is really great to have coverage like this, thank you!