[Feature] Replace Nasdaq SP500 Multiples With Direct Source

[deeleeramone]

1. Why?:

   • The only provider for this data has stopped updating their endpoint and can be replaced with the direct source.

2. What?:

   • Add actionable warning when the command is run with nasdaq as the provider.

3. Impact:

   • Adds a new provider module, that is not yet published to PyPI.
   • Multiple items allowed for series_name.

4. Testing Done:

   • Integration/Unit tests.
   • Checked the warning is being broadcast as expected.