[K8S-537] bind operator and operator chart versions

[chrisseto]

Prior to this commit the operator helm chart was managed as a standalone module/project. Doing so resulted in needless confusion and compatibility issues.

This commit moves charts/operator to operator/chart and combines the go modules into one, effectively making the release and development process of the operator and its chart one in the same.

[chrisseto]

Ah, I should also mention the RBAC config of the operator was impressively out of date. I also updated as part of the move as I changed our tests to point at the local kustomize configurations instead of a static version.

[RafalKorepta]

Currently I see problems with RBAC

deploying *v1.Role: "rp-connectors-sidecar-controllers": roles.rbac.authorization.k8s.io "rp-connectors-sidecar-controllers" is forbidden: 
user "system:serviceaccount:redpanda:redpanda-operator" (groups=["system:serviceaccounts" "system:serviceaccounts:redpanda" "system:authenticated"]) 
is attempting to grant RBAC permissions not currently held:
{APIGroups:[""], Resources:["persistentvolumeclaims"], Verbs:["delete" "patch" "update" "watch"]}
{APIGroups:["apps"], Resources:["statefulsets/status"], Verbs:["patch" "update"]}

[RafalKorepta]

I found one Role didn't have RoleBinding. After my flight I will push fix

[chrisseto]

I found one Role didn't have RoleBinding. After my flight I will push fix

I fixed up the role bindings. Acceptance and integration tests are passing locally for me.

[chrisseto]

💚 All backports created successfully

Status	Branch	Result
✅	release/v2.4.x
✅	release/v2.3.x

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