update AZFunctionApp and AZWebApp enum

[af001]

Changes:

list-function-apps.go
list-web-apps.go

AZFunctionApp and AZWebapp do not correctly display neo4j entities due to the keyword checks failing; specifically functionapp and app. The kind attribute may contain more than one value separated by a comma.

Observed variations from AppServices:

functionapp,workflowapp
<class 'str'>

app,linux
<class 'str'>

functionapp,linux
<class 'str'>

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[af001]

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