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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