Add s3hub cp sub command

[nao1215]

No description provided.

[github-actions]

HOTTEST report

PASS	FAIL	SKIP	TOTAL	DURATION
141	0	5	146	6.48423535s

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Reported by hottest

[github-actions]

Code Metrics Report

	main (90c48e6)	#16 (9913984)	+/-
Coverage	20.4%	17.3%	-3.1%
Test Execution Time	34s	11s	-23s

Details

  |                     | main (90c48e6) | #16 (9913984) |  +/-  |
  |---------------------|----------------|---------------|-------|
- | Coverage            |          20.4% |         17.3% | -3.1% |
  |   Files             |             26 |            27 |    +1 |
  |   Lines             |            794 |           918 |  +124 |
- |   Covered           |            162 |           159 |    -3 |
+ | Test Execution Time |            34s |           11s |  -23s |

Code coverage of files in pull request scope (15.1% → 11.1%)

Files	Coverage	+/-
app/di/wire_gen.go	0.0%	0.0%
app/domain/model/s3.go	67.9%	-2.5%
app/external/s3.go	0.0%	0.0%
app/interactor/s3.go	0.0%	0.0%
cmd/subcmd/s3hub/cp.go	0.0%	-100.0%
cmd/subcmd/s3hub/ls.go	0.0%	0.0%
cmd/subcmd/s3hub/rm.go	0.0%	0.0%

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Reported by octocov