Update Data Types in Yaci Following Conway CDDL Changes

[Sotatek-HuyLe3a]

Description:
Recent changes in the Conway CDDL files have specified numeric ranges explicitly and named some common types. This issue aims to review and update the corresponding data types in Yaci accordingly.

Changes to Review:

1. OperationalCert:
   CDDL Change: From uint to uint .size 8
   Current Yaci Data Type: Integer
   Action: Change to Long
   Impact: This will affect the column type in Yaci store. Plan this change post 0.1.0 release.
2. epoch_no:
   CDDL Change: to uint .size 8
   Current Yaci Data Type: Integer
   Action: No immediate change required. Add as an enhancement for future consideration.

References:
Commit 1
Commit 2
Commit 3
Commit 4
Commit 5