Verified docs match current state of repo and roles
Checklist
My code follows the project's style guidelines.
I have performed a self-review of my own code.
I have updated the documentation (if necessary).
### Description
This PR updates `README.md` and adds `README.md` files for all roles
### Related Issue
Closes #12
### Testing Done
- [x] Verified docs match current state of repo and roles
### Checklist
- [x] My code follows the project's style guidelines.
- [x] I have performed a self-review of my own code.
- [x] I have updated the documentation (if necessary).
Added repo README
- updated repo structure tree.
- Limited tree depth to be cleaner
- ensure new role folders are listed
- add new role section, listing each role and giving a link to their README file
- updated Prerequisites to include info on required variable for all roles and hosts
- updated Services Deployed to list missing services from newly added `backup` role.
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Description
This PR updates
README.mdand addsREADME.mdfiles for all rolesRelated Issue
Closes #12
Testing Done
Checklist