[BULK] Convert MySQL Time to unified TIME_INTERVAL types

[codecov[bot]]

Codecov Report

Attention: Patch coverage is 87.17949% with 5 lines in your changes missing coverage. Please review.

Project coverage is 48.47%. Comparing base (d7db191) to head (d08f605). Report is 3 commits behind head on main.

Additional details and impacted files

```diff @@ Coverage Diff @@ ## main #1741 +/- ## ============================================ + Coverage 42.32% 48.47% +6.15% + Complexity 3182 1006 -2176 ============================================ Files 794 330 -464 Lines 46244 17825 -28419 Branches 4951 1790 -3161 ============================================ - Hits 19572 8641 -10931 + Misses 25074 8586 -16488 + Partials 1598 598 -1000 ``` | [Components](https://app.codecov.io/gh/GoogleCloudPlatform/DataflowTemplates/pull/1741/components?src=pr&el=components&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=GoogleCloudPlatform) | Coverage Δ | | |---|---|---| | [spanner-templates](https://app.codecov.io/gh/GoogleCloudPlatform/DataflowTemplates/pull/1741/components?src=pr&el=component&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=GoogleCloudPlatform) | `63.11% <87.17%> (-0.59%)` | :arrow_down: | | [spanner-import-export](https://app.codecov.io/gh/GoogleCloudPlatform/DataflowTemplates/pull/1741/components?src=pr&el=component&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=GoogleCloudPlatform) | `∅ <ø> (∅)` | | | [spanner-live-forward-migration](https://app.codecov.io/gh/GoogleCloudPlatform/DataflowTemplates/pull/1741/components?src=pr&el=component&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=GoogleCloudPlatform) | `75.00% <75.00%> (+0.02%)` | :arrow_up: | | [spanner-live-reverse-replication](https://app.codecov.io/gh/GoogleCloudPlatform/DataflowTemplates/pull/1741/components?src=pr&el=component&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=GoogleCloudPlatform) | `51.96% <75.00%> (+0.12%)` | :arrow_up: | | [spanner-bulk-migration](https://app.codecov.io/gh/GoogleCloudPlatform/DataflowTemplates/pull/1741/components?src=pr&el=component&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=GoogleCloudPlatform) | `82.43% <87.17%> (-0.37%)` | :arrow_down: | | [Files](https://app.codecov.io/gh/GoogleCloudPlatform/DataflowTemplates/pull/1741?dropdown=coverage&src=pr&el=tree&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=GoogleCloudPlatform) | Coverage Δ | | |---|---|---| | [...dbc/rowmapper/provider/MysqlJdbcValueMappings.java](https://app.codecov.io/gh/GoogleCloudPlatform/DataflowTemplates/pull/1741?src=pr&el=tree&filepath=v2%2Fsourcedb-to-spanner%2Fsrc%2Fmain%2Fjava%2Fcom%2Fgoogle%2Fcloud%2Fteleport%2Fv2%2Fsource%2Freader%2Fio%2Fjdbc%2Frowmapper%2Fprovider%2FMysqlJdbcValueMappings.java&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=GoogleCloudPlatform#diff-djIvc291cmNlZGItdG8tc3Bhbm5lci9zcmMvbWFpbi9qYXZhL2NvbS9nb29nbGUvY2xvdWQvdGVsZXBvcnQvdjIvc291cmNlL3JlYWRlci9pby9qZGJjL3Jvd21hcHBlci9wcm92aWRlci9NeXNxbEpkYmNWYWx1ZU1hcHBpbmdzLmphdmE=) | `83.33% <100.00%> (-16.67%)` | :arrow_down: | | [...ema/typemapping/provider/MysqlMappingProvider.java](https://app.codecov.io/gh/GoogleCloudPlatform/DataflowTemplates/pull/1741?src=pr&el=tree&filepath=v2%2Fsourcedb-to-spanner%2Fsrc%2Fmain%2Fjava%2Fcom%2Fgoogle%2Fcloud%2Fteleport%2Fv2%2Fsource%2Freader%2Fio%2Fschema%2Ftypemapping%2Fprovider%2FMysqlMappingProvider.java&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=GoogleCloudPlatform#diff-djIvc291cmNlZGItdG8tc3Bhbm5lci9zcmMvbWFpbi9qYXZhL2NvbS9nb29nbGUvY2xvdWQvdGVsZXBvcnQvdjIvc291cmNlL3JlYWRlci9pby9zY2hlbWEvdHlwZW1hcHBpbmcvcHJvdmlkZXIvTXlzcWxNYXBwaW5nUHJvdmlkZXIuamF2YQ==) | `100.00% <100.00%> (ø)` | | | [...er/migrations/avro/GenericRecordTypeConvertor.java](https://app.codecov.io/gh/GoogleCloudPlatform/DataflowTemplates/pull/1741?src=pr&el=tree&filepath=v2%2Fspanner-common%2Fsrc%2Fmain%2Fjava%2Fcom%2Fgoogle%2Fcloud%2Fteleport%2Fv2%2Fspanner%2Fmigrations%2Favro%2FGenericRecordTypeConvertor.java&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=GoogleCloudPlatform#diff-djIvc3Bhbm5lci1jb21tb24vc3JjL21haW4vamF2YS9jb20vZ29vZ2xlL2Nsb3VkL3RlbGVwb3J0L3YyL3NwYW5uZXIvbWlncmF0aW9ucy9hdnJvL0dlbmVyaWNSZWNvcmRUeXBlQ29udmVydG9yLmphdmE=) | `88.15% <75.00%> (-0.79%)` | :arrow_down: | ... and [480 files with indirect coverage changes](https://app.codecov.io/gh/GoogleCloudPlatform/DataflowTemplates/pull/1741/indirect-changes?src=pr&el=tree-more&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=GoogleCloudPlatform)