Optimizations for Governance Transactions Queries

[dcshock]

Description

On 12/24/2024 and issue was found that impacted uptime of the Explorer API. It was determined that a single user was repeatedly querying an endpoint for governance transactions, and that the query was resulting in a long running transaction that after repeatedly being initiated would cause the service to restart. In order to resolve the issues a few performance improvements are in this PR:

1. a caching interface has been added for a couple of the block and transaction endpoints that tend to get hit often
2. the materialized view for validator status has been removed as it isn't necessary, and provides additional complexity that the team would rather not have to debug through
3. the query for governance transactions has been optimized so that it responds timely

Most notable change is in the service/src/main/kotlin/io/provenance/explorer/domain/entities/Transactions.kt file.

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• Wrote unit and integration
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[arnabmitra]

ktlint is failing ..but looks good otherwise

[dcshock]

ktlint is failing ..but looks good otherwise

resolved the linting issue. We'll swing back through with a linting update to ktlint 1.5.0