Demo Mode for sfpowerscripts

[azlam-abdulsalam]

This creates a demo mode for sfpowerscripts that can be activated by setting the variables

export SFPOWERSCRIPTS_DEMO_MODE=true`
export SFPOWERSCRIPTS_DEMO_FOLDER_PATH= <path to demo reel> (should contain a demo.json)

This is useful when sfpowerscripts need to be demoed to an audience, this runs a pre captured output with delays and can be utilized to explain concepts.

Demoreels for quick build and release is added

[codecov-commenter]

Codecov Report

Merging #520 (a58c6c4) into develop (83f33cf) will not change coverage.
The diff coverage is 100.00%.

@@           Coverage Diff            @@
##           develop     #520   +/-   ##
========================================
  Coverage    79.39%   79.39%           
========================================
  Files           38       38           
  Lines         1291     1291           
  Branches       222      222           
========================================
  Hits          1025     1025           
  Misses         266      266           

Impacted Files	Coverage Δ
packages/core/src/utils/Delay.ts	100.00% <100.00%> (ø)

---

Continue to review full report at Codecov.

Legend - Click here to learn more
Δ = absolute <relative> (impact), ø = not affected, ? = missing data
Powered by Codecov. Last update 83f33cf...a58c6c4. Read the comment docs.