Add global config for shared search

[ewels]

We have shared: true in the search patterns for two use cases:

• A generic filename, where there's a risk that the file could be incorrectly found and "consumed", being lost from other modules
• Where the tool generates stdout, with the assumption that people may be concatenating log files.

I'm not sure that the second one happens much now, and it slows down the search quite a bit.

Idea is to remove these config options where the pattern looks specific, but add in a global option that effectively sets shared: true for all search patterns, in case there are users who are affected.

[vladsavelyev]

@ewels - you added a lot of shared: true here: 902b18f
Most of which look unnecessary in terms of the first point. Do you think it makes sense to move those into a global flag?

[ewels]

Yup, exactly 👌🏻

That was 7 years ago, long enough for me to have my own weird log sharing stuff happening. I think it's ok to remove these now.