Differentiate between the namespace where state is stored vs. namespaces were App resources are deployed in `kapp list`

[pivotaljohn]

Describe the problem/challenge you have Multiple users have found the "namespace" portion of kapp list to be unintuitive (at best), confusing, or lead them to incorrect conclusions (at worst).

Examples:

• #206
• #207

Describe the solution you'd like More clearly differentiate between:

• the namespace wherein the App state is stored, and
• the namespace(s) where Apps are deployed

Example:

kapp ls -A 
Target cluster 'https://127.0.0.1:32784' (nodes: minikube)

Apps in all namespaces

State Namespace  Name  Namespaces                 Lcs    Lca  
default          app   foo                        false  55s  
^                kc    (cluster),kapp-controller  true   11m  
^                rbac  (cluster),default          true   10m  

Anything else you would like to add:

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