Enhance Olympia to add support for multiple load/store pipelines-LFX Mentorship Enhancement to Olympia: Ojus Chugh

[ojuschugh1]

Pull Request Summary
This pull request introduces several key changes to the LSU class constructor to support multiple pipelines and improve the management of load/store instructions for the LFX mentorship Task. The updates include:

Support for Multiple Pipelines:

Added functionality to handle multiple pipelines (num_pipelines_).

[klingaard]

Thank you for your contribution to the LFX mentorship challenge!

This is very good work and on the correct path towards the goals we were trying to achieve for multiple LS pipelines.

For those that might look at this PR for inspiration, a couple of notes:

1. The number of issue queues does is not necessarily tied to the number of pipelines. Dispatch (which sends the instructions to LS) will not know the number of issue queues and only sends instructions based on credits from probably 1 queue
2. Each pipeline is being treated equally. One intent of multiple pipelines is to separate loads from stores, have "generic" pipelines, etc. This PR is a good start towards that goal

[klingaard]

Closing this PR. Thank you for challenge contribution.