Move Duck.ai to standalone Activity

[joshliebe]

Task/Issue URL: https://app.asana.com/0/488551667048375/1209707104709213/f

Description

• We currently use WebViewActivity for the Duck.ai screen.
• To fix specific bugs and add specific integrations, this needs to move to it's own Activity: DuckChatWebViewActivity.

Changes

• Adds DuckChatWebViewActivity, with a cut-down WebViewClient.
• • Hardcodes the UA to the same one used in SubscriptionsWebViewActivity.
• Removes Duck.ai functionality from WebViewActivity.
• Moves DuckChatJsHelper from app module to duck-chat module.
• Integrates DuckChatPreferencesStore into DuckChatDataStore.

Steps to test this PR

Overflow

• Open Duck.ai from the overflow
• Verify that Duck.ai is opened

SERP

• Search for something
• Open Duck.ai using the SERP button
• Verify that Duck.ai is opened (With pre-filled text)

DuckAssist

• Search for “how tall is a giraffe"
• Click the “Chat" button from DuckAssist
• Verify that Duck.ai is opened (And DuckAssist is triggered)

Shortcut

• Open Duck.ai form the shortcut
• Verify that Duck.ai is opened

[joshliebe]

• Move Duck.ai to standalone Activity #5784 : 2 dependent PRs (#5785 , #5791 ) 👈 (View in Graphite)
• develop

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[malmstein]

works as expected, just a couple suggestions but nothing blocking.

[malmstein]

forgot to add this comment