Glob patterns for file/directory exclusion/inclusion

[michenriksen]

As a user,
  I want to do fine-grained exclusion and inclusion of files and directories using glob patterns
So that, 
  I can exclude branches of code or irrelevant files in file monitoring or focus on specific tests

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Possible packages for glob parsing:

• https://github.com/gobwas/glob
• https://github.com/bmatcuk/doublestar

[katrinleinweber]

Would a more coarse approach of enabling multiple [dir] inputs help here, as an intermediate step towards glob-based includes?