Setup template for community examples (ultralytics#718)

Co-authored-by: pre-commit-ci[bot] <66853113+pre-commit-ci[bot]@users.noreply.github.com>

examples/README.md

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+This is a list of real-world applications and walkthroughs. These can be folders of either python files or notebooks .
+
+## Ultralytics YOLO example applications
+
+| Title                                                              | Format          | Contributor                               |
+| ------------------------------------------------------------------ | --------------- | ----------------------------------------- |
+| \[Dummy\] [Inventory managenet using YOLO](./inventory-management) | python/notebook | [AyushExel](https://github.com/AyushExel) |
+
+## How can you contribute ?
+
+We're looking for examples, applications and guides from the community. Here's how you can contribute:
+
+- Make a PR with `[Example]` prefix in title after adding your project folder in the examples/ folder of the repository
+- The project should satisfy these conditions:
+  - It should use ultralytics framework
+  - It have a README.md with instructions to run the project
+  - It should avoid adding large assets or dependencies unless absolutely needed
+  - The contributor is expected to help out in issues related to their examples
+
+If you're unsure about any of these requirements, make a PR and we'll happy to guide you

examples/inventory-management/README.md

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+This is a dummy project