Use wrappers around action methods to handle quiet/pretend invocation of commands

Here's an example of running grep say_status lib/homesick/actions.rb on homesick's source.

say_status 'git clone', "#{repo} to #{destination.expand_path}", :green unless options[:quiet]
say_status :exist, destination.expand_path, :blue unless options[:quiet]
say_status 'git init', '' unless options[:quiet]
say_status 'git init', 'already initialized', :blue unless options[:quiet]
say_status 'git remote', "add #{name} #{url}" unless options[:quiet]
# about 20 lines removed for brevity

The quiet and pretend options are often checked manually, which leads to fairly complex looking code.

Instead, I think it would be cleaner to use methods that handle quiet/pretend invocation for us. I vaguely remember seeing something in Thor's source code about a quiet? getter method that is used in say_status, but I couldn't figure out how to set this yet. It would be nice to use features built into Thor if there are any for this, but worst case we can add our own wrapper methods.

Start in lib/homesick/actions.rb by reviewing the action methods and the repeated quiet/pretend checks shown in the issue. Then inspect Thor's support for quiet or pretend invocation before deciding whether existing features or wrappers fit. Done means the action methods use a consistent mechanism instead of manually checking these options, with behavior preserved.