[Microbyte] Building a drum-kit webpage using JavaScript

[sandip2224]

Closes #27

Added a MicroByte to involve the learners to build their own drum-kit webpage from scratch.

Checklist:

• [x] Added activities for learners
• [x] Didn't give the solutions to the added activities straight away
• [x] Followed a LearnByDoing approach
• [x] Clean and well-documented code (if source code files are involved)
• [x] Added image references for better understanding if deemed necessary

[sandip2224]

I don't know but my previous file changes to are not showing up the second time now. Please check my local repository if necessary.

[Kevinpaulose05]

@sandip2224 Will u be able to raise issues(obv after merging) that the learners can solve from the existing state of the MB ?

[sandip2224]

Yes I have a few issues in mind concerning this MB. I will raise them.