Redpanda-Operator: move folders around to top level to simplify testing and taskfiles.

[alejandroEsc]

What would you like to be added?

Do not want to have main binaries under src/go any longer as this causes a lot of issues when writing task files and testing.

Why is this needed?

Simplify code and reduce the need for src/go directory structure.

JIRA Link: K8S-210

[chrisseto]

Primary question on my mind: Do we want to use a go.work and have separate modules or consolidate onto a single go.mod?

I lean towards a single go.mod because it's few deps to worry about but depending on the current state, the merger might be too much effort to take on.

[chrisseto]

So I've realized that this will cause issues. I'd love to do it but a lot of install steps currently depend on the CRDs being located where they currently are as it's referenced in our docs.

We'll need to find a more stable URL to migrate to be it a vanity URL or github releases.