Re add files from chat-bubble example

[Bouh]

The chat-bubble example has been deleted by mistake in a merge from master in this commit:
0f3e107

The incident has been reported on the forum:
https://forum.gdevelop.io/t/chatbubble-link/43284/4

This PR fix this mistake.

@tristanbob Just to let you know (Nothing to do on your side I fixed it)

Waiting for CI, tests.

[github-actions]

Preview the game(s) changed or added in this Pull Request

• https://editor.gdevelop.io?project=https://raw.githubusercontent.com/GDevelopApp/GDevelop-examples/come_back_bubble/examples/chat-bubble/chat-bubble.json

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This is an automatic message displaying links to the games in this PR - double check the JSON in case of doubt.

[github-actions]

Images automagically compressed by Calibre's image-actions ✨

Compression reduced images by 20%, saving 14.49 KB.

Filename	Before	After	Improvement	Visual comparison
examples/chat-bubble/assets/AngryPig_Hit 1_1.png	209 bytes	169 bytes	-19.1%	View diff
examples/chat-bubble/assets/AngryPig_Hit 1_2.png	209 bytes	169 bytes	-19.1%	View diff
examples/chat-bubble/assets/AngryPig_Hit 1_3.png	674 bytes	423 bytes	-37.2%	View diff
examples/chat-bubble/assets/AngryPig_Hit 1_4.png	709 bytes	438 bytes	-38.2%	View diff
examples/chat-bubble/assets/AngryPig_Hit 1_5.png	725 bytes	433 bytes	-40.3%	View diff
examples/chat-bubble/assets/AngryPig_Hit 2_1.png	209 bytes	169 bytes	-19.1%	View diff
examples/chat-bubble/assets/AngryPig_Hit 2_2.png	209 bytes	169 bytes	-19.1%	View diff
examples/chat-bubble/assets/AngryPig_Hit 2_3.png	661 bytes	403 bytes	-39.0%	View diff
examples/chat-bubble/assets/AngryPig_Hit 2_4.png	691 bytes	424 bytes	-38.6%	View diff
examples/chat-bubble/assets/AngryPig_Hit 2_5.png	699 bytes	420 bytes	-39.9%	View diff
examples/chat-bubble/assets/AngryPig_Idle_1.png	762 bytes	450 bytes	-40.9%	View diff
examples/chat-bubble/assets/AngryPig_Idle_2.png	762 bytes	445 bytes	-41.6%	View diff
examples/chat-bubble/assets/AngryPig_Idle_3.png	732 bytes	435 bytes	-40.6%	View diff
examples/chat-bubble/assets/AngryPig_Idle_4.png	732 bytes	435 bytes	-40.6%	View diff
examples/chat-bubble/assets/AngryPig_Idle_5.png	725 bytes	442 bytes	-39.0%	View diff
examples/chat-bubble/assets/AngryPig_Idle_6.png	726 bytes	457 bytes	-37.1%	View diff
examples/chat-bubble/assets/AngryPig_Idle_7.png	769 bytes	447 bytes	-41.9%	View diff
examples/chat-bubble/assets/AngryPig_Idle_8.png	769 bytes	447 bytes	-41.9%	View diff
examples/chat-bubble/assets/AngryPig_Idle_9.png	769 bytes	447 bytes	-41.9%	View diff
examples/chat-bubble/assets/AngryPig_Run_1.png	717 bytes	434 bytes	-39.5%	View diff
examples/chat-bubble/assets/AngryPig_Run_10.png	738 bytes	443 bytes	-40.0%	View diff
examples/chat-bubble/assets/AngryPig_Run_11.png	721 bytes	432 bytes	-40.1%	View diff
examples/chat-bubble/assets/AngryPig_Run_12.png	721 bytes	432 bytes	-40.1%	View diff
examples/chat-bubble/assets/AngryPig_Run_2.png	712 bytes	436 bytes	-38.8%	View diff
examples/chat-bubble/assets/AngryPig_Run_3.png	712 bytes	436 bytes	-38.8%	View diff
examples/chat-bubble/assets/AngryPig_Run_4.png	717 bytes	430 bytes	-40.0%	View diff
examples/chat-bubble/assets/AngryPig_Run_5.png	726 bytes	430 bytes	-40.8%	View diff
examples/chat-bubble/assets/AngryPig_Run_6.png	726 bytes	430 bytes	-40.8%	View diff
examples/chat-bubble/assets/AngryPig_Run_7.png	735 bytes	447 bytes	-39.2%	View diff
examples/chat-bubble/assets/AngryPig_Run_8.png	753 bytes	452 bytes	-40.0%	View diff
examples/chat-bubble/assets/AngryPig_Run_9.png	753 bytes	452 bytes	-40.0%	View diff
examples/chat-bubble/assets/AngryPig_Walk_1.png	750 bytes	445 bytes	-40.7%	View diff
examples/chat-bubble/assets/AngryPig_Walk_10.png	775 bytes	458 bytes	-40.9%	View diff
examples/chat-bubble/assets/AngryPig_Walk_11.png	775 bytes	458 bytes	-40.9%	View diff
examples/chat-bubble/assets/AngryPig_Walk_12.png	775 bytes	458 bytes	-40.9%	View diff
examples/chat-bubble/assets/AngryPig_Walk_13.png	777 bytes	457 bytes	-41.2%	View diff
examples/chat-bubble/assets/AngryPig_Walk_14.png	750 bytes	454 bytes	-39.5%	View diff
examples/chat-bubble/assets/AngryPig_Walk_15.png	745 bytes	445 bytes	-40.3%	View diff
examples/chat-bubble/assets/AngryPig_Walk_16.png	745 bytes	445 bytes	-40.3%	View diff
examples/chat-bubble/assets/AngryPig_Walk_2.png	751 bytes	443 bytes	-41.0%	View diff
examples/chat-bubble/assets/AngryPig_Walk_3.png	751 bytes	443 bytes	-41.0%	View diff
examples/chat-bubble/assets/AngryPig_Walk_4.png	751 bytes	443 bytes	-41.0%	View diff
examples/chat-bubble/assets/AngryPig_Walk_5.png	750 bytes	439 bytes	-41.5%	View diff
examples/chat-bubble/assets/AngryPig_Walk_6.png	745 bytes	443 bytes	-40.5%	View diff
examples/chat-bubble/assets/AngryPig_Walk_7.png	745 bytes	442 bytes	-40.7%	View diff
examples/chat-bubble/assets/AngryPig_Walk_8.png	745 bytes	442 bytes	-40.7%	View diff
examples/chat-bubble/assets/AngryPig_Walk_9.png	758 bytes	454 bytes	-40.1%	View diff
examples/chat-bubble/thumbnail.png	40.51 KB	38.63 KB	-4.6%	View diff

4354 images did not require optimisation.