Support metadata for custom metrics

[k1LoW]

No description provided.

[github-actions]

Code Metrics Report

	main (bd079c7)	#270 (09de623)	+/-
Coverage	66.0%	66.6%	+0.6%
Code to Test Ratio	1:0.5	1:0.5	+0.0
Test Execution Time	26s	16s	-10s

Details

  |                     | main (bd079c7) | #270 (09de623) |  +/-  |
  |---------------------|----------------|----------------|-------|
+ | Coverage            |          66.0% |          66.6% | +0.6% |
  |   Files             |             31 |             31 |     0 |
  |   Lines             |           2752 |           2799 |   +47 |
+ |   Covered           |           1815 |           1863 |   +48 |
+ | Code to Test Ratio  |          1:0.5 |          1:0.5 |  +0.0 |
  |   Code              |           7146 |           7214 |   +68 |
+ |   Test              |           3367 |           3512 |  +145 |
+ | Test Execution Time |            26s |            16s |  -10s |

Code coverage of files in pull request scope (84.9% → 89.2%)

Files	Coverage	+/-
report/custom.go	89.2%	+4.3%

Benchmark-0 (this is custom metrics test)

	main (bd079c7)	#270 (09de623)	+/-
Number of iterations	1000	1000	0
Nanoseconds per iteration	676.5 ns/op	676.5 ns/op	0.0 ns/op

Metadata

GOOS	GOARCH
darwin	amd64

Benchmark-1 (this is custom metrics test)

	main (bd079c7)	#270 (09de623)	+/-
Number of iterations	1500	1500	0
Nanoseconds per iteration	1345 ns/op	1345 ns/op	0 ns/op

Metadata

GOOS	GOARCH
darwin	amd64

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Reported by octocov