Clarify normative, tentative, new Deliverables

[csarven]

• Further aligns the deliverables section with the charter-drafts template (#draft-status, adopted draft).
• Clarifies the pledged deliverables from adopting new deliverables based on incubated work (#tentative-deliverables), and minor editorial on integration and versioning.
• Reworks content from approved charters which had initially received Formal Objection (due to above point).
• Clarifies relationship between the WG and ongoing CG (#add-new-deliverables) and ties it with #w3c-coordination.

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[csarven]

As per 2023-04-19 decision in https://github.com/solid/specification/blob/main/meetings/2023-04-19.md#clarify-normative-tentative-new-deliverables , this PR is pending @pchampin 's guidance.