add support for Ruby

[championswimmer]

• add the docker container and compile + run scripts here
• add run spec test on taskmaster add ruby run spec judge-taskmaster#11

[kapillamba4]

Pull request for this issue: #5

[Satyabrat35]

PR for this issue #8

[championswimmer]

note the bounty is subject the completition of both the sub tasks

[aggarwalpulkit596]

Pr for this issue #7 and sub part of this pr coding-blocks/judge-taskmaster#12

[championswimmer]

sorry running busy. i'll take a look at the prs by tomorrow