chore(nuget): Add support for macosx (#553)

Additionally
- Include more metadata in nuget package
- Also generate snupkg for native symbols.
  We intentionally don't add the symbols for native rust shared library
  to the nuget package since that could increase the size of the nuget.
  We will revisit that later.
- update licenses of all the bindings.

closes #551

Signed-off-by: Anand Krishnamoorthi <anakrish@microsoft.com>

.github/workflows/test-csharp.yml

@@ -31,17 +31,18 @@ jobs:
             target: x86_64-unknown-linux-gnu
             libpath: |
               **/release/libregorus_ffi.so
-          # Disabled for now
-          #- os: macos-latest
-          #  target: aarch64-apple-darwin
-          #  libpath: |
-          #    **/release/libregorus_ffi.dylib
+          - os: macos-latest
+            target: aarch64-apple-darwin
+            libpath: |
+              **/release/libregorus_ffi.dylib
     steps:
       - name: Checkout repository
         uses: actions/checkout@08eba0b27e820071cde6df949e0beb9ba4906955 # v4
         with:
           fetch-depth: 0
       - uses: ./.github/actions/toolchains/rust
+        with:
+          targets: ${{ matrix.runtime.target }}
       - name: Cache cargo
         uses: Swatinem/rust-cache@779680da715d629ac1d338a641029a2f4372abb5 # v2.8.2
         with:
@@ -99,13 +100,15 @@ jobs:
         run: ls -R ./bindings/csharp/Regorus/tmp
 
       - name: Build Regorus nuget via xtask
-        run: cargo xtask build-csharp --release --clean --artifacts-dir ./bindings/csharp/Regorus/tmp/bindings/ffi/target --enforce-artifacts
+        run: cargo xtask build-csharp --release --clean --artifacts-dir ./bindings/csharp/Regorus/tmp/bindings/ffi/target --enforce-artifacts --repository-commit ${{ github.sha }} --include-symbols
 
       - name: Upload Regorus nuget
         uses: actions/upload-artifact@ea165f8d65b6e75b540449e92b4886f43607fa02 # v4.6.2
         with:
           name: regorus-nuget
-          path: bindings/csharp/Regorus/bin/Release/Regorus*.nupkg
+          path: |
+            bindings/csharp/Regorus/bin/Release/Regorus*.nupkg
+            bindings/csharp/Regorus/bin/Release/Regorus*.snupkg
           if-no-files-found: error
           retention-days: 1
 
@@ -122,8 +125,8 @@ jobs:
             target: x86_64-pc-windows-msvc
           - os: ubuntu-latest
             target: x86_64-unknown-linux-gnu
-          #- os: macos-latest
-          #  target: aarch64-apple-darwin
+          - os: macos-latest
+            target: aarch64-apple-darwin
     steps:
       - name: Checkout repository
         uses: actions/checkout@08eba0b27e820071cde6df949e0beb9ba4906955 # v4