Update old references and package names

Author: tomasMizera

.github/workflows/packages.yml

@@ -1,4 +1,4 @@
-name: Build Mergin Plugin Packages
+name: Build Package
 on:
   push:
   workflow_dispatch:
@@ -16,7 +16,6 @@ env:
   PYTHON_API_CLIENT_VER: ${{ inputs.REQUESTED_PYTHON_API_CLIENT_VER || '0.12.0' }}
   GEODIFF_VER:  ${{ inputs.REQUESTED_GEODIFF_VER || '2.1.1' }}
   PYTHON_VER: "38"
-  PLUGIN_NAME: Mergin  
 jobs:
   build_linux_binary:
     name: Extract geodiff binary linux
@@ -134,7 +133,7 @@ jobs:
           name: artifact-pygeodiff-macos
           path: ./pygeodiff-binaries/*.dylib
 
-  create_mergin_plugin_package:
+  create_plugin_package:
     needs: [build_windows_binaries, build_linux_binary, build_macos_binaries]
     runs-on: ubuntu-latest
     steps:  
@@ -208,13 +207,13 @@ jobs:
 
       - uses: actions/upload-artifact@v4
         with:
-          name: Mergin b${{ env.BUILD_NUM }}
+          name: MM Plugin d-${{ env.BUILD_NUM }}
           path: output/
 
       - name: upload asset on tagged release
         uses: softprops/action-gh-release@v1
         if: startsWith(github.ref, 'refs/tags/')
         with:
-          files: mergin.zip
+          files: MM Plugin r-${{ env.BUILD_NUM }}.zip
         env:
           GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}