feat: Add flag to blob copy action to disregard intermediate paths

[AlexAxthelm]

Currently, the blob-copy action keeps intermediate paths when downloading files, so something like

      - name: Download Analysis Outputs
        id: download-analysis-outputs
        uses: RMI-PACTA/actions/actions/azure/blob-copy@main
        with:
          source: https://pactadatadev.blob.core.windows.net/container_name/some/long/path/foo
          destination: dest_dir

will write files to dest_dir/some/long/path/foo (including recursives, so foo/a/b/c.txt would be dest_dir/some/long/path/foo/a/b/c.txt)

Add an optional input to copy objects (files/dirs) directly to $DESTINATION, so that we would see dest_dir/a/b/c.txt instead.

[AlexAxthelm]

Currently thinking of calling this ignore-intermediate-paths, with a default of true (which may break some existing workflows, but is more coherent moving forward).