goalc: Get CodeTester tests passing on Arm64 (only targetting macOS atm) (#3290)

This PR does the following:
- Designs a mechanism by which arm64 instructions can be encoded and
emitted
- Dispatch our higher-level instruction emitting calls to either x86 or
arm64 instructions depending on what the compiler is set to (defaults to
x86)
- Bare minimum scaffolding to get the arm64 instructions successfully
executing atleast on apple silicon
- Implement enough instructions to get the codetester test suite passing
on arm

.github/workflows/build-matrix.yaml

@@ -57,6 +57,6 @@ jobs:
     name: "🍎 MacOS"
     uses: ./.github/workflows/macos-build-arm.yaml
     with:
-      cmakePreset: "Release-macos-x86_64-clang"
+      cmakePreset: "Release-macos-arm64-clang"
       cachePrefix: ""
     secrets: inherit

.github/workflows/release-pipeline.yaml

@@ -79,7 +79,7 @@ jobs:
       uploadArtifacts: true
     secrets: inherit
 
-  build_macos_arm:
+  build_macos_arm_rosetta:
     needs:
       - cut_release
     name: "🍎 MacOS"
@@ -98,7 +98,7 @@ jobs:
       - build_windows_clang
       - build_linux_clang
       - build_macos_intel
-      - build_macos_arm
+      - build_macos_arm_rosetta
     name: "Upload Artifacts"
     runs-on: ubuntu-latest
     steps: