Improvements in `Taker-Cli`

[KnowWhoami]

Bugs:

• [x] Log statements are printed when a command is called in taker-cli.

Refactorings:

• [x] Separate Coinswap Command:
  • Extract do_coinswap into a separate sub-command.
  • Ensure all related arguments are nested within this sub-command.

[KnowWhoami]

Note :

• This improvements may also require in Maker-Cli.
• Let's just do these things first for Taker then we can do the same for Maker also.