Update ICM Send Message CMD based on findings from E2E

[sukantoraymond]

Comments are in #2798

Things that can be improved:

• --force-registry-deploy flag (Add e2e tests for icm deploy and sendMsg commands #2798 (comment))
• if source rpc and dest rpc are provided, there is no need for subnet names in the command argument anymore (Add e2e tests for icm deploy and sendMsg commands #2798 (comment))
• Remove duplicate flags, just keep icm (Add e2e tests for icm deploy and sendMsg commands #2798 (comment))
• need to update "--hex-encoded" flag description (Add e2e tests for icm deploy and sendMsg commands #2798 (comment))