Resource specs for Init Containers

[Mortom123]

Implements #425

Motivation

As described in the FR some cluster providers are a little bit more "strict" regarding their deployed containers and the resources they are allowed to use. This patch introduces resources to all init containers together with a corresponding section in values.yaml

Modifications

values.yaml now has a new section initContainer_resources where each init container type is listed by name and describes the resources it is allowed to use.
I also addedd a blank resources section to pulsar_metadata because the currently existing template uses this attribute, however there was no sign of it in values.yaml which is unintuitive.

Verifying this change

• Make sure that the change passes the CI checks.
  (I don't know how, but lemme know how so I can run the checks)

[lhotari]

Please increase the default memory limits