Add packs and queries from input

This commit adds the packs and queries from the actions input to the
config file used by the CodeQL CLI.

When the `+` is used, the actions input value is combined with the
config value and when it is not used, the input value overrides the
config value.

This commit also adds a bunch of integration tests for this feature.
In order to avoid adding too many new jobs, all of the tests are
run sequentially in a single job (matrixed across relevant operating
systems and OSes).

.github/query-filter-test/action.yml

@@ -49,4 +49,4 @@ runs:
         queries-not-run: ${{ inputs.queries-not-run}}
     - name: Cleanup after test
       shell: bash
-      run: rm -rf "$RUNNER_TEMP/results" "$RUNNER_TEMP//query-filter-test"
+      run: rm -rf "$RUNNER_TEMP/results" "$RUNNER_TEMP/query-filter-test"