Add querier metrics for requests executed #7497

Job	Run time
Test packages - tempodb/wal	7m 31s
Test packages - tempodb	10m 4s
Test integration e2e suite	26m 14s
Test serverless integration e2e suite	6m 5s
Lint	4m 59s
Test packages - others	9m 15s
Test packages - pkg	2m 24s
Benchmark	8m 41s
Build	1m 32s
Build technical documentation	26s
Check jsonnet & tempo-mixin	1m 22s
Vendor check	1m 7s
	1h 19m 40s

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