Add 4 new starter examples:

[Bouh]

• 3D First Person Survival Crafting
• 3D First Person Farming
• Top-down Survival Crafting
• Top-down Farming

[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/new-3D-starters/examples/starting-first-person-farming/starting-first-person-farming.json
• https://editor.gdevelop.io?project=https://raw.githubusercontent.com/GDevelopApp/GDevelop-examples/new-3D-starters/examples/starting-first-person-survival-crafting/starting-first-person-survival-crafting.json
• https://editor.gdevelop.io?project=https://raw.githubusercontent.com/GDevelopApp/GDevelop-examples/new-3D-starters/examples/starting-top-down-farming/starting-top-down-farming.json
• https://editor.gdevelop.io?project=https://raw.githubusercontent.com/GDevelopApp/GDevelop-examples/new-3D-starters/examples/starting-top-down-survival-crafting/starting-top-down-survival-crafting.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.