Add repetition analyzer

[k1LoW]

ref: https://google.github.io/styleguide/go/decisions#repetition

[github-actions]

Code Metrics Report

	main (5cfe24f)	#35 (00b1e1c)	+/-
Coverage	66.2%	63.8%	-2.4%
Code to Test Ratio	1:0.1	1:0.1	-0.0
Test Execution Time	5s	7s	+2s

Details

  |                     | main (5cfe24f) | #35 (00b1e1c) |  +/-  |
  |---------------------|----------------|---------------|-------|
- | Coverage            |          66.2% |         63.8% | -2.4% |
  |   Files             |              9 |            10 |    +1 |
  |   Lines             |            450 |           556 |  +106 |
+ |   Covered           |            298 |           355 |   +57 |
- | Code to Test Ratio  |          1:0.1 |         1:0.1 |  -0.0 |
  |   Code              |           1410 |          1645 |  +235 |
+ |   Test              |            118 |           128 |   +10 |
- | Test Execution Time |             5s |            7s |   +2s |

Code coverage of files in pull request scope (0.0% → 41.3%)

Files	Coverage	+/-
analyzer/decisions/repetition/repetition.go	53.8%	+53.8%
config/config.go	0.0%	0.0%

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Reported by octocov