Support maximum years of inactivity option

[kyoshidajp]

No description provided.

[github-actions]

Code Metrics Report

	main (ae86bd6)	#16 (d26a535)	+/-
Coverage	40.1%	40.3%	+0.2%
Code to Test Ratio	1:0.4	1:0.4	-0.0
Test Execution Time	21s	25s	+4s

Details

  |                     | main (ae86bd6) | #16 (d26a535) |  +/-  |
  |---------------------|----------------|---------------|-------|
+ | Coverage            |          40.1% |         40.3% | +0.2% |
  |   Files             |             11 |            11 |     0 |
  |   Lines             |            297 |           298 |    +1 |
+ |   Covered           |            119 |           120 |    +1 |
- | Code to Test Ratio  |          1:0.4 |         1:0.4 |  -0.0 |
  |   Code              |            778 |           780 |    +2 |
  |   Test              |            328 |           328 |     0 |
- | Test Execution Time |            21s |           25s |   +4s |

Code coverage of files in pull request scope (10.5% → 12.1%)

Files	Coverage	+/-
cmd/diagnose.go	12.1%	+1.5%

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Reported by octocov