style: Rename actions to use dash (#2669)

.github/actions/get-threads-number/action.yml

@@ -0,0 +1,36 @@
+name: Get number of threads
+description: Determines number of threads to use on macOS and Linux
+
+inputs:
+  subtract_threads:
+    description: How many threads to subtract from the calculated number
+    required: true
+    default: "0"
+outputs:
+  threads_number:
+    description: Number of threads to use
+    value: ${{ steps.number_of_threads_export.outputs.num }}
+
+runs:
+  using: composite
+  steps:
+    - name: Get number of threads on mac
+      id: mac_threads
+      if: ${{ runner.os == 'macOS' }}
+      shell: bash
+      run: echo "num=$(($(sysctl -n hw.logicalcpu) - 2))" >> $GITHUB_OUTPUT
+
+    - name: Get number of threads on Linux
+      id: linux_threads
+      if: ${{ runner.os == 'Linux' }}
+      shell: bash
+      run: echo "num=$(($(nproc) - 2))" >> $GITHUB_OUTPUT
+
+    - name: Shift and export number of threads
+      id: number_of_threads_export
+      shell: bash
+      run: |
+        num_of_threads="${{ steps.mac_threads.outputs.num || steps.linux_threads.outputs.num }}"
+        shift_by="${{ inputs.subtract_threads }}"
+        shifted="$((num_of_threads - shift_by))"
+        echo "num=$(( shifted > 1 ? shifted : 1 ))" >> $GITHUB_OUTPUT