Chatbot AI enablement updates

[kaylachumley]

an epic placeholder to hold sub issues related to AI documentation updates

Updates:

• New robot icon

• Ai disclaimer in footer

• Robot icon button for launching the chatbot

• Robot avatar variants for the chatbot bot messages

• Masthead launch location design guidelines with new robot icon

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Jira Issue: PF-3819

[patternfly-jira-sync]

Closed via Jira sync - Jira issue PF-3819 was closed.