[docs][glossary] Add page that lists all standardized k8s terms (#5657)

* Add comprehensive glossary page

Additional Authors:
* Andrew Chen <chenopis@users.noreply.github.com>
* Steve Perry <steveperry-53@users.noreply.github.com>

* incorporate Tim's feedback

* address zach's comments

* address more comments

* add additional crosslinking

* Add platform developer, tweak formatting for disambiguation cases or multiparagraph definitions.

_data/glossary/_example.yml

@@ -1,13 +1,13 @@
 id: _example
 name: Example K8s Term
-formerly:
+aka:
 - Slang K8s Term
 - Misnomer
 - Formerly Known as Prince
 related:
-- Less Fancy K8s Term
-- Tangential Term
-- Commonly Used With
+- id-of-less-fancy-k8s-term
+- id-of-tangential-term
+- id-of-commonly-used-with-term
 tags:
 - Some Tag
 short-description: |