Add Test CI

[yutannihilation]

Close #7

Some notes:

• Currently this fails because of the problem I reported in Fix fncall #14.
• The config matrix contains only Ubuntu for now because no difference is found so far between platforms. But, it's easy to add macOS and Windows as well.
• The setup for ALSA is derived from cpal's GitHub Actions settings.

[yutannihilation]

You can see how this CI setup runs (and fails) here:

https://github.com/yutannihilation/mimium-rs/actions

[tomoyanonymous]

Thanks! This really helps.

In the config, both stable and nightly channels are tested but stable channel looks like being overwritten to nightly by rust-toolchain.toml

https://github.com/yutannihilation/mimium-rs/actions/runs/10293042761/job/28488605866#step:3:67

Run rustup default stable
info: using existing install for 'stable-x86_64-unknown-linux-gnu'
info: default toolchain set to 'stable-x86_64-unknown-linux-gnu'

  stable-x86_64-unknown-linux-gnu unchanged - rustc 1.80.0 (0514789[57](https://github.com/yutannihilation/mimium-rs/actions/runs/10293042761/job/28488605866#step:3:64) 2024-07-21)
info: note that the toolchain 'nightly-x86_64-unknown-linux-gnu' is currently in use (overridden by '/home/runner/work/mimium-rs/mimium-rs/rust-toolchain.toml')

I set nightly as a default because I use some unstable feature, especially box_pattern and iterator_try_collect to simplify the codes. So, I think we need to test only nightly toolchain for now.

box_pattern seems to hardly be stabilized, however, if we start using arena for recursive types(#12), box_pattern will no longer needed anyway.

rust-lang/rust#29641

[yutannihilation]

Oh, I see. I forgot rust-toolchain.toml exists. Then I remove the stable case.

Thanks for explaining the context including #12. Since this project is mainly about providing a binary, not a library, I guess compatibility with stable is not very important. But, #12 looks nice. I'll try to understand.

[yutannihilation]

result:
https://github.com/yutannihilation/mimium-rs/actions/runs/10295092683

(mainly note to self)
I quickly searched if there's some way to let dtolnay/rust-toolchain refer to rust-toolchain.toml instead of specifying toolchain: nightly, but it seems the author doesn't want to support it. So, probably there's no nicer way.

dtolnay/rust-toolchain#77