feat: add new config option

[incendial]

Please write a short comment explaining your change (or "none" for internal only changes)

Adds new config option ignored-arguments to no-equal-arguments rule.

[codecov[bot]]

Codecov Report

Merging #1187 (db584c1) into master (d19a1e4) will increase coverage by 0.00%. The diff coverage is 94.11%.

@@           Coverage Diff           @@
##           master    #1187   +/-   ##
=======================================
  Coverage   86.12%   86.13%           
=======================================
  Files         359      359           
  Lines        8085     8097   +12     
=======================================
+ Hits         6963     6974   +11     
- Misses       1122     1123    +1     

Impacted Files	Coverage Δ
...st/no_equal_arguments/no_equal_arguments_rule.dart	77.77% <66.66%> (-3.48%)	:arrow_down:
...s/rules_list/no_equal_arguments/config_parser.dart	100.00% <100.00%> (ø)
...r/rules/rules_list/no_equal_arguments/visitor.dart	92.10% <100.00%> (+1.19%)	:arrow_up:

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