add github ci config

This patch configures shpool to start using github
actions for CI. It is cribbed from
[wprs](https://github.com/wayland-transpositor/wprs/tree/master/.github/workflows).

I found that miri can't handle all the stuff shpool does
just yet (in particular the pipe2 syscall is not yet
supported). We should periodically check to see if sufficient
support has landed to test shpool under miri.

.github/workflows/nightly.yml

@@ -0,0 +1,18 @@
+name: nightly
+on:
+  schedule:
+    - cron: '04 05 * * *'
+
+jobs:
+  deny:
+    name: cargo deny --all-features check
+    runs-on: ubuntu-22.04
+    steps:
+      - uses: actions/checkout@b4ffde65f46336ab88eb53be808477a3936bae11
+      - uses: moonrepo/setup-rust@b8edcc56aab474d90c7cf0bb8beeaf8334c15e9f
+        with:
+          bins: cargo-deny
+      - run: cargo deny --all-features check
+
+  postsubmit:
+    uses: ./.github/workflows/presubmit.yml

.github/workflows/presubmit.yml

@@ -0,0 +1,66 @@
+name: presubmit
+on: [push, pull_request, workflow_call, workflow_dispatch]
+
+env:
+  # Without this, tracy-client won't build because the github runners don't have
+  # TSCs. We don't care since we're not actually testing tracy functionality but
+  # we still want to test with --all-features.
+  TRACY_NO_INVARIANT_CHECK: 1
+
+jobs:
+  test:
+    name: cargo test --all-features
+    runs-on: ubuntu-22.04
+    steps:
+      - uses: actions/checkout@b4ffde65f46336ab88eb53be808477a3936bae11
+      - uses: moonrepo/setup-rust@b8edcc56aab474d90c7cf0bb8beeaf8334c15e9f
+      - run: sudo apt-get install zsh fish
+      - run: cargo test --all-features
+
+  # miri does not handle all the IO we do, disabled for now.
+  # 
+  # miri:
+  #   name: cargo +nightly miri test
+  #   runs-on: ubuntu-22.04
+  #   steps:
+  #     - uses: actions/checkout@b4ffde65f46336ab88eb53be808477a3936bae11
+  #     - uses: moonrepo/setup-rust@b8edcc56aab474d90c7cf0bb8beeaf8334c15e9f
+  #       with:
+  #         components: miri
+  #         channel: nightly
+  #     - run: sudo apt-get install zsh fish
+  #     - run: MIRIFLAGS="-Zmiri-disable-isolation" cargo +nightly miri test
+
+  rustfmt:
+    name: cargo +nightly fmt -- --check
+    runs-on: ubuntu-22.04
+    steps:
+      - uses: actions/checkout@b4ffde65f46336ab88eb53be808477a3936bae11
+      - uses: moonrepo/setup-rust@b8edcc56aab474d90c7cf0bb8beeaf8334c15e9f
+        with:
+          components: rustfmt
+          channel: nightly
+      - run: cargo +nightly fmt -- --check
+
+  cranky:
+    name: cargo +nightly cranky --all-targets -- -D warnings
+    runs-on: ubuntu-22.04
+    steps:
+      - uses: actions/checkout@b4ffde65f46336ab88eb53be808477a3936bae11
+      - uses: moonrepo/setup-rust@b8edcc56aab474d90c7cf0bb8beeaf8334c15e9f
+        with:
+          components: clippy
+          bins: [email protected]
+          channel: nightly
+      - run: sudo apt-get install zsh fish
+      - run: cargo +nightly cranky --all-targets -- -D warnings
+
+  deny:
+    name: cargo deny --all-features check licenses
+    runs-on: ubuntu-22.04
+    steps:
+      - uses: actions/checkout@b4ffde65f46336ab88eb53be808477a3936bae11
+      - uses: moonrepo/setup-rust@b8edcc56aab474d90c7cf0bb8beeaf8334c15e9f
+        with:
+          bins: cargo-deny
+      - run: cargo deny --all-features check licenses

shpool/src/main.rs

@@ -15,7 +15,6 @@
 /// aims to provide a simpler user experience. See [the
 /// README](https://github.com/shell-pool/shpool) for more
 /// info.
-
 use clap::Parser;
 
 const VERSION: &str = env!("CARGO_PKG_VERSION");