demo(release): Add release tester from demo site and update JSDOC guide

[jolevesq]

Please include a summary of the change and which issue is fixed. Please also include relevant motivation and context. List any dependencies that are required for this change.

Type of change

• Bug fix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Breaking change (fix or feature that would cause existing functionality to not work as expected)
• This change requires a documentation update

How Has This Been Tested?

Please describe the tests that you ran to verify your changes. Provide instructions so we can reproduce.

hosted Feb 23, 15:30
https://jolevesq.github.io/geoview/release-navigator.html

https://jolevesq.github.io/geoview/wcag.html

Checklist:

• I have build (rush build) and deploy (rush host) my PR
• I have connected the issues(s) to this PR
• My code follows the style guidelines of this project
• I have performed a self-review of my own code
• I have commented my code, particularly in hard-to-understand areas
• My changes generate no new warnings
• I have created new issue(s) related to the outcome of this PR is needed
• I have made corresponding changes to the documentation~~
• I have added tests that prove my fix is effective or that my feature works
• New and existing unit tests pass locally with my changes

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This change is 

[jolevesq]

@jolevesq reviewed 12 files and all commit messages, and resolved 3 discussions.
Reviewable status: 12 of 13 files reviewed, all discussions resolved (waiting on Alex-NRCan, DamonU2, kenchase, and MatthewMuehlhauserNRCan).

[kenchase]

@kenchase made 1 comment.
Reviewable status: 12 of 13 files reviewed, all discussions resolved (waiting on Alex-NRCan, DamonU2, and MatthewMuehlhauserNRCan).

[DamonU2]

@DamonU2 reviewed 13 files and all commit messages, and made 2 comments.
Reviewable status: all files reviewed, 2 unresolved discussions (waiting on Alex-NRCan, jolevesq, and MatthewMuehlhauserNRCan).

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CONTRIBUTING.md line 90 at r4 (raw file):

         * Add RCS config layers to configuration after startup has finished
         *
         * @param keys - Uptional list of keys marking which layers to retrieve

Uptional > Optional

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.github/copilot-instructions.md line 239 at r4 (raw file):

 * It dispatches an event to the EventProcessor, which
 * will trigger the appropriate GeoView API call.
 *

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[jolevesq]

@jolevesq reviewed 5 files and all commit messages, and made 2 comments.
Reviewable status: all files reviewed, 2 unresolved discussions (waiting on Alex-NRCan, DamonU2, and MatthewMuehlhauserNRCan).

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CONTRIBUTING.md line 90 at r4 (raw file):

Previously, DamonU2 (Damon Ulmi) wrote…

Uptional > Optional

Done.

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.github/copilot-instructions.md line 239 at r4 (raw file):

Previously, DamonU2 (Damon Ulmi) wrote…

This blank line is not represented in the list above

Done.

[DamonU2]

@DamonU2 reviewed 5 files and all commit messages, and resolved 2 discussions.
Reviewable status: complete! all files reviewed, all discussions resolved (waiting on Alex-NRCan and MatthewMuehlhauserNRCan).

[Alex-NRCan]

@Alex-NRCan reviewed 13 files and all commit messages.
Reviewable status: complete! all files reviewed, all discussions resolved (waiting on MatthewMuehlhauserNRCan).