Provide a way to pass a whole configuration as parameter #1589

Problem

As a user of GitHub CodeQL in Actions I would like to be able to pass some configuration when running my workflow, for example:

• pass a query filter from or environment variable or input parameter

Today only a subset of the available configuration/parameters is available in the action.

Solution

Add a new parameter, for example called configuration that will take the same format as a config-file but can be used directly in the action.

The idea is to support the following examples:

• Complete on configuration

  - uses: github/codeql-action/init@v2
    with:
      languages: ${{ matrix.language }}
      configuration: |
        disable-default-queries: true
        queries:
          - uses: security-extended
          - uses: security-and-quality
        query-filters:
          - include:
        tags: /cwe-020/

• Actions Variable

  - uses: github/codeql-action/init@v2
    with:
      languages: ${{ matrix.language }}
      configuration: |
            ${{vars.CODEQL_CONF}}    

• Input Parameter

    - uses: tgrall/codeql-action/init@query-filter
    with:
      languages: ${{ matrix.language }}
      configuration: |
        disable-default-queries: true
        queries:
          - uses: security-extended
          - uses: security-and-quality
        query-filters:
          - include:
              tags: /${{ github.event.inputs.codeql-include-tags }}/