Add --format and --json options to search

[talwrii]

These are quite useful for ad hoc scripting

Example: bugz search blah --format '{bug[creator]}' | sort | uniq -c

The --json option is particularly useful when combined with record stream.

[benmoran]

Thanks, this is useful for me!

[talwrii]

Perhaps unsurprising since it was written while I was working for your company :p.

[benmoran]

Perhaps unsurprising since it was written while I was working for your company :p.

Well that is funny, hello!