Enhance BASH completion

[bheisig]

Expected behavior

When using bash the completion script should auto-complete user keyboard interactions for every single command and its options. This includes:

• All commands, for example read
• All common options, for example --help or -c
• All command-specific options and arguments, for example idoitcli read server

Actual behavior

Script only supports a subset of available commands, but not a single option/argument.

Steps to reproduce the behavior

idoitcli re<tab>
idoitcli read ser<tab>

Environment

Question	Answer
idoitcli version	0.5