feat: add jmh benchmark module

[pmakani]

No description provided.

[codecov]

Codecov Report

Merging #686 into master will decrease coverage by 0.42%.
The diff coverage is n/a.

@@ Coverage Diff @@ ## master #686 +/- ## ============================================ - Coverage 81.49% 81.07% -0.43%  - Complexity 1226 1236 +10  ============================================ Files 77 78 +1 Lines 6220 6329 +109 Branches 691 702 +11 ============================================ + Hits 5069 5131 +62  - Misses 792 833 +41  - Partials 359 365 +6 

Impacted Files	Coverage Δ	Complexity Δ
.../main/java/com/google/cloud/bigquery/BigQuery.java	76.23% <0.00%> (-1.15%)	0.00% <0.00%> (ø%)
...n/java/com/google/cloud/bigquery/BigQueryImpl.java	82.84% <0.00%> (-0.75%)	77.00% <0.00%> (+3.00%)	⬇️
.../google/cloud/bigquery/spi/v2/HttpBigQueryRpc.java	4.94% <0.00%> (-0.26%)	2.00% <0.00%> (ø%)
...y/src/main/java/com/google/cloud/bigquery/Acl.java	71.42% <0.00%> (ø)	13.00% <0.00%> (ø%)
...ava/com/google/cloud/bigquery/BigQueryOptions.java	88.88% <0.00%> (ø)	11.00% <0.00%> (ø%)
...n/java/com/google/cloud/bigquery/PolicyHelper.java	65.00% <0.00%> (ø)	6.00% <0.00%> (?%)
.../com/google/cloud/bigquery/spi/v2/BigQueryRpc.java	82.60% <0.00%> (+0.79%)	0.00% <0.00%> (ø%)
...c/main/java/com/google/cloud/bigquery/TableId.java	85.18% <0.00%> (+1.18%)	15.00% <0.00%> (+1.00%)

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