Upload demo video to multi-cloud directory

[PravinRanjan10]

This PR solve two purpose:

1. Change sub dir name BasicMc to Multi-cloud
2. Upload demo video to dir Multi-cloud

What type of PR is this?

Uncomment only one /kind <> line, hit enter to put that in a new line, and remove leading whitespace from that line:

/kind new feature
/kind bug fix
/kind cleanup
/kind revert change
/kind design
/kind documentation
/kind enhancement

What this PR does / why we need it:

Which issue(s) this PR fixes:

Fixes #

Test Report Added?:

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/kind TESTED
/kind NOT-TESTED

Test Report:

Special notes for your reviewer:

[skdwriting]

Why I see multiple go and other files? It is video and readme right?

[PravinRanjan10]

Why I see multiple go and other files? It is video and readme right?

Actually, there was a dir, BaiscMC( for multi-cloud related demo/ppts etc. IMO, name was not clear), but now renamed to multi-cloud. So all files are now added to multi-cloud. That's the reason many files are appearing in this PR. I have added details also in PR description.