feat(entities-shared): terraform block compatibility with event gateway entities

[TT1228]

Summary

KM-1430

Event gateway entities have terraform formats that's slightly different from API gateways, adjusting to it.

[kongponents-bot]

Preview components from this PR in consuming application

In consuming application project install preview versions of shared packages generated by this PR:

@kong-ui-public/entities-shared@pr-2591
@kong-ui-public/dashboard-renderer@pr-2591
@kong-ui-public/documentation@pr-2591
@kong-ui-public/forms@pr-2591
@kong-ui-public/entities-certificates@pr-2591
@kong-ui-public/entities-consumer-credentials@pr-2591
@kong-ui-public/entities-consumer-groups@pr-2591
@kong-ui-public/entities-consumers@pr-2591
@kong-ui-public/entities-data-plane-nodes@pr-2591
@kong-ui-public/entities-gateway-services@pr-2591
@kong-ui-public/entities-key-sets@pr-2591
@kong-ui-public/entities-keys@pr-2591
@kong-ui-public/entities-snis@pr-2591
@kong-ui-public/entities-upstreams-targets@pr-2591
@kong-ui-public/entities-vaults@pr-2591
@kong-ui-public/expressions@pr-2591
@kong-ui-public/entities-redis-configurations@pr-2591
@kong-ui-public/entities-routes@pr-2591
@kong-ui-public/entities-plugins@pr-2591

[nekolab]

LGTM