Tool help standardization

[subfuzion]

• All of our tools should display help in the same format as the CLI.
• All command and option help descriptions should start with an uppercase letter to look consistent. Linux tools are pretty inconsistent (even gnu programs, like gcc and yacc, aren't consistent). It's not that any one format is best, but we should at least strive for consistency among our own tools. If we end a description with a period, then all descriptions should end with a period (and vice versa).

[neha-viswanathan]

There is a difference in the usage message for certain commands. Need a consensus on deciding what should Use contain?

var StackCmd = &cobra.Command{
	Use:   "stack operations",
	Short: "Stack operations",
       ....

var ServiceCmd = &cobra.Command{
	Use:   "service",
	Short: "Manage services",
        ....

[ndegory]

@neha-viswanathan IMO and based on the official doc, Use should be the binary/command name, Short should be a few words description, and Long can be a multiline description.