WIP client generalization

[rigelrozanski]

closes #1124
closes #2955
closes #4299

followup to module genesis generalization, this work needs to be done in a separate PR

to accomplish the client generalization which is in theory pretty simple there is an enormous amount of restructuring required due to lots of early design choices which are now leading to lots of circular dependencies.

The current state of the PR actually has most of the core updates, but the restructuring is going to be quite large

• Targeted PR against correct branch (see CONTRIBUTING.md)

• Linked to github-issue with discussion and accepted design OR link to spec that describes this work.

• Wrote tests

• Updated relevant documentation (docs/)

• Added a relevant changelog entry: clog add [section] [stanza] [message]

• rereviewed Files changed in the github PR explorer

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For Admin Use:

• Added appropriate labels to PR (ex. wip, ready-for-review, docs)
• Reviewers Assigned
• Squashed all commits, uses message "Merge pull request #XYZ: [title]" (coding standards)

[rigelrozanski]

replaced by #4451