kgo: add missing customentities policy rules

[pmalek]

What this PR does / why we need it:

This is missing from KGO's policy rules.

In Kubernetes, in order to give permissions (KGO gives ControlPlanes permissions), one has to have that permissions itself.

This PR gives KGO's manager role, customentities policy rules so that it can give that to KIC.

This also bumps KIC's CRDs to 3.2.0.

Finally, release gateway-operator chart 0.1.9

Special notes for your reviewer:

Checklist

[Place an '[x]' (no spaces) in all applicable fields. Please remove unrelated fields.]

• PR is based off the current tip of the main branch.
• Changes are documented under the "Unreleased" header in CHANGELOG.md
• New or modified sections of values.yaml are documented in the README.md
• Commits follow the Kong commit message guidelines