v1.1.1

feat: add nodepool_provisioning_duration metric (#40)

* feat: add nodepool_provisioning_duration metric

* updated TestSummarize expectations for provisioning metric

Updated internal/records/events_test.go to expect ProvisioningDuration: 1h and ProvisioningState: "success" for older test cases that calculate these values but previously defaulted to zero values in the test table.

* implement failed provisioning state and refactor constants

* replace strings with constants and rename provisioning state variables

* use constants for node statuses

* standardize provisioning duration metric family across resources

* update metrics

* remove prefix and add test for failed provisioning