Using subcommands instead of using options

[sreesh-mallya]

I've some suggestions too: How about using subcommands instead of using options for logging in, getting the problem description, listing contests, and submitting code?

Maybe something like:

• codechefcli login to login
• codechefcli problem WEICOM to get the problem description
• codechefcli problem --level easy or codechefcli problem --search easy to search for problems based on difficulty
• codechefcli contests to list contests
• codechefcli submit WEICOM /path/to/solution/file C++ to submit a solution. Maybe we can use options here.

How about we use typer, instead of argparse?

Originally posted by @sreesh-mallya in #51 (comment)

[sk364]

@sreesh-mallya are you working on this?

[sreesh-mallya]

@sk364 No not yet but I can take a take it up if you want me to, after I finish the other one.

[sreesh-mallya]

@sk364 I've started work on this issue. I'll create a PR with both the response styling and the subcommands together.

[pybash1]

@sreesh-mallya can I work on this too? (If using typer)