Clean start.sh script

[KartavyaSharma]

The start.sh script was never meant to become so bloated. Currently it handles setting up all the dependencies, starting the runner.py instance, and possible setting up the backup daemon (once it is implemented). Split the start.sh script into multiple modules. Possible modules include:

• setup.sh
• runner.sh
• bkp.sh

Have all of these run through a main.sh script that calls on these scripts based on the flags provided. Also, research task: how to nest flags w/o having to ask the user for additional flags when one of the sub-modules has been called. For an example, check out the https://sh.rustup.rs script that rust uses to install itself on to a system.