Add a github workflow for Linux based on the swiftlang template

Test on the Linux distributions that Swiftly currently supports.
Also, test with the latest stable Swift toolchain.

Build libarchive and install it using the shell script.

Author: cmcgee1024

.github/workflows/pull_request.yml

@@ -0,0 +1,30 @@
+name: Pull request
+
+on:
+  pull_request:
+    types: [opened, reopened, synchronize]
+
+jobs:
+  soundness:
+    name: Soundness
+    uses: swiftlang/github-workflows/.github/workflows/soundness.yml@main
+    with:
+      license_header_check_enabled: false
+      license_header_check_project_name: "Swift.org"
+      api_breakage_check_enabled: false
+      docs_check_enabled: false
+      format_check_enabled: false
+      shell_check_enabled: false
+      unacceptable_language_check_enabled: true
+
+  tests:
+    name: Test
+    uses: swiftlang/github-workflows/.github/workflows/swift_package_test.yml@main
+    with:
+      #linux_os_versions: "[\"jammy\", \"noble\", \"focal\", \"amazonlinux2\", \"rhel-ubi9\", \"bookworm\", \"fedora39\"]"
+      # Not working: noble (compile error in TSC Filesystem), bookworm (missing memory.h), fedora39 (missing memory.h)
+      linux_os_versions: "[\"jammy\", \"focal\", \"amazonlinux2\", \"rhel-ubi9\"]"
+      # We only care about the current stable release, because that's where we make our swiftly releases
+      linux_exclude_swift_versions: "[{\"swift_version\": \"nightly-main\"},{\"swift_version\": \"nightly-6.0\"},{\"swift_version\": \"5.8\"},{\"swift_version\": \"5.9\"},{\"swift_version\": \"5.10\"}]"
+      linux_pre_build_command: ((apt-get update && apt-get -y install curl make) || ((curl --help || yum -y install curl) && yum -y install make)) && ./scripts/install-libarchive.sh
+      enable_windows_checks: false