Add a summary of the size ignored

[Vadorequest]

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- /Users/vadorequest/.cache/act/[email protected]/node_modules/@babel/core/node_modules has been excluded from Time Machine backups (872K).
- /Users/vadorequest/.cache/act/[email protected]/node_modules/@babel/generator/node_modules has been excluded from Time Machine backups (792K).
- /Users/vadorequest/.cache/act/jwalton-gh-find-current-pr@v1/node_modules has been excluded from Time Machine backups (3.2M).

Displaying a summary of the total size that's been ignored would be great! It's the best indicator about how useful this utility is, as it would show how much space will be gained in the future and how much time will be saved by not copying those useless files 😉