source: excel: New source for xlxs files

[johnandersen777]

Follow both source tutorials to get an idea of how sources work. See the CLI command reference for listing records.

Follow the complex source tutorial to implement a source which provides access to xlxs format files. The entrypoint for the source should be xlxs.

We need to create this as a new plugin

References:

• https://openpyxl.readthedocs.io/en/stable/usage.html

[rajpratyush]

@pdxjohnny can you give some more details on this issue on what has to be done?

[johnandersen777]

@rajpratyush Have you gone through the following documentation?

• https://intel.github.io/dffml/master/contributing/index.html
• https://intel.github.io/dffml/master/tutorials/sources/index.html

[Pratikrocks]

@pdxjohnny do we require any other configs for xlxs files apart from filename readwrite allowempty ?
I made a rough implementtion for this issue but I kept only the above 3 configs for the xlxs sources

[johnandersen777]

Sounds good to me. For future reference, a PR is an easier way to talk about this kind of stuff if you've already implemented it.

[Pratikrocks]

@pdxjohnny okay creating it shortly

[yopknopixx]

Hello, is this issue resolved? If not I would like to work on this.