Add Signals to ecosystem showcase

[bertiespell]

Thank you for your contribution to the IC Developer Portal.
Before submitting your Pull Request, please make sure that:

• You have updated the .github/CODEOWNERS file according to your changes.
• You have registered new documents to /sidebars.js if any.

[dfinity-droid-prod]

Dear @bertiespell,

In order to potentially merge your code in this open-source repository and therefore proceed with your contribution, we need to have your approval on DFINITY's CLA¹.

If you decide to agree with it, please visit this issue and read the instructions there.

— The DFINITY Foundation

Footnotes

1. Contributor License Agreement ↩

[dfinity-droid-prod]

Dear @bertiespell,

In order to potentially merge your code in this open-source repository and therefore proceed with your contribution, we need to have your approval on DFINITY's CLA¹.

If you decide to agree with it, please visit this issue and read the instructions there.

— The DFINITY Foundation

Footnotes

1. Contributor License Agreement ↩

[sesi200]

The CLA bot broke once again... Would you mind going through the flow over here too? dfinity/cla#282