catalog/lease: add metrics for tracking long lease waits

[fqazi]

Previously, we had no way of knowing if WaitForOneVersion, WaitForNoVersion, or CheckTwoVersionInvariant, which wait for leases to expire are stuck. This becomes more problematic as we added migration to session-based leasing. If something goes wrong during this migration, there is a danger of schema changes hanging while waiting for leases to expire. To address this, this patch will add new metrics for detecting long waits in these code paths

Fixes: #119209

Release note: None

[cockroach-teamcity]

This change is 

[fqazi]

@rafiss TFTR!

[fqazi]

bors r+

[craig[bot]]

Build succeeded:

• Bazel Essential CI (Cockroach)