Add the --ignore flag to dbotconf

[MrAlias]

Example use:

dbotconf --ignore "/LICENSES" generate

Resolves #362 (verified locally)

[codecov]

Codecov Report

Patch coverage: 58.33% and project coverage change: -0.40 ⚠️

Comparison is base (35e6027) 60.83% compared to head (26c6685) 60.43%.

❗ Current head 26c6685 differs from pull request most recent head 908e611. Consider uploading reports for the commit 908e611 to get more accurate results

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #363      +/-   ##
==========================================
- Coverage   60.83%   60.43%   -0.40%     
==========================================
  Files          49       49              
  Lines        2298     2328      +30     
==========================================
+ Hits         1398     1407       +9     
- Misses        750      770      +20     
- Partials      150      151       +1     

Impacted Files	Coverage Δ
dbotconf/internal/cmd.go	0.00% <0.00%> (ø)
dbotconf/internal/generate.go	71.79% <40.00%> (-4.92%)	⬇️
dbotconf/internal/verify.go	78.21% <40.00%> (-4.08%)	⬇️
internal/repo/repo.go	62.16% <70.00%> (+0.87%)	⬆️
dbotconf/internal/mods.go	60.00% <100.00%> (ø)

... and 1 file with indirect coverage changes

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[mx-psi]

LGTM, non-blocking comment about the flag docs