Resolve "Update README to Reflect Current Repo Structure"

* I have understood and followed the following:
  * our AI policy: https://git.ichec.ie/platform-engineering/platform-eng-handbook/-/blob/main/src/ai_policy.md - Y
  * our IP policy: https://git.ichec.ie/platform-engineering/platform-eng-handbook/-/blob/main/src/ip_policy.md - Y
  * our security guidelines: https://git.ichec.ie/platform-engineering/platform-eng-handbook/-/blob/main/src/security.md - Y
* I have reviewed the MR myself:
  * side-by-side with our coding standards document: https://git.ichec.ie/platform-engineering/platform-eng-handbook/-/blob/main/src/coding_standards.md - Y
  * and added explaining comments as needed to help the reviewer - Y
* This MR is ready for review - I've done my best to check for obvious issues to save the reviewer's time - Y

This MR - Closes #30 (closed)

In this MR; README.md file is updated to reflect the current contents and references of the repo.