Name and UID glossary terms (#6606)

* add name glossary term

* add uid glossary term

* use glossary terms in doc

* Update uid.yaml

* Update name.yaml

_data/glossary/uid.yaml

@@ -0,0 +1,10 @@
+id: uid
+name: UID
+full-link: /docs/concepts/overview/working-with-objects/names
+tags:
+  - fundamental
+short-description: >
+  A Kubernetes systems-generated string to uniquely identify objects.
+long-description: >
+  Every object created over the whole lifetime of a Kubernetes cluster has a distinct UID.
+  It is intended to distinguish between historical occurrences of similar entities.