Rename and simplify action to setup-git

Removed Python setup steps to focus solely on Git configuration. Updated Git user email and name setup to dynamically use GitHub actor details for improved accuracy.

Author: coordt

.github/actions/setup-git/action.yaml

@@ -0,0 +1,11 @@
+name: setup-git
+description: 'Setup git'
+runs:
+  using: 'composite'
+  steps:
+    - name: Git check
+      run: |
+        git config --global user.email "${GITHUB_ACTOR_ID}+${GITHUB_ACTOR}@users.noreply.github.com"
+        git config --global user.name "$(gh api /users/${GITHUB_ACTOR} | jq .name -r)"
+        git config -l
+      shell: bash