[Internal] [Feature] Add Singularity to C/I

[ankushkgupta2]

What is the Feature Related To? Please Provide a Description.
Need to add Singularity to C/I. Contingent on modifications to the existing bash shell script for setting up the .sif image and a new shell script that handles installing Singularity itself.

Place an ❌ in a Box that Best Matches the Feature's Importance:

• [] 1 - Most important (absolutely integral and will not use codebase at all without it)
• 2-4 - Moderate (still using codebase for other functions but is serving as a blocker for future use-cases)
• [] 5 - Least important (would like to see but there are no stringent expectations nor urgency for current/future use-cases) 

Any Additional Context or Information? Has There Been Any Progress Made So Far Towards this Request? Any Helpful Resources to Reference? Screenshots or Links?
Linked to Issue #20
Linked to Issue #29