Draft new reviewer guidelines: docs-reviewer, community-reviewer, web-reviewer, and baseline tech reviewer rules/template

[sptramer]

As part of accepting https://github.com/o3de/sig-docs-community/issues/61, we need clearer guidance around which types of review roles are available, what the qualifications are, and where you can go for more information. Part of this will be involved in the messaging (https://github.com/o3de/sig-docs-community/issues/61) in collaboration with other SIGs, possibly filed as additional RFCs under the provision that the current proposal is the working model for right now.

Tasks

• [x] Draft any new docs reviewer, community reviewer, and web reviewer guidelines needed.
• [x] Draft baseline requirements for tech reviewers, and socialize to other SIGs. SIGs are allowed to modify this baseline (including exemptions from some of our rules, with approval).

[sptramer]

Close this issue when all of the following are merged:

• https://github.com/o3de/sig-docs-community/pull/77
• https://github.com/o3de/sig-docs-community/pull/78
• https://github.com/o3de/sig-docs-community/pull/79
• https://github.com/o3de/sig-docs-community/pull/80
• https://github.com/o3de/sig-docs-community/pull/81