chore: Add sponsors section to readme (#758)

* chore: Add sponsors section to readme

* which link style works in nested folders?

* add sponsors to plugin readmes

* use https links as src

* double test it with the pr branch

* revert last commit

* fmt

Committed via a GitHub action: https://github.com/tauri-apps/plugins-workspace/actions/runs/6972163125

Co-authored-by: FabianLars <FabianLars@users.noreply.github.com>

README.md

@@ -1,4 +1,4 @@
-![plugin-store](banner.png)
+![plugin-store](https://github.com/tauri-apps/plugins-workspace/raw/v1/plugins/store/banner.png)
 
 Simple, persistent key-value store.
 
@@ -107,6 +107,22 @@ with_store(app_handle, stores, path, |store| store.insert("a".to_string(), json!
 
 PRs accepted. Please make sure to read the Contributing Guide before making a pull request.
 
+## Partners
+
+<table>
+  <tbody>
+    <tr>
+      <td align="center" valign="middle">
+        <a href="https://crabnebula.dev" target="_blank">
+          <img src="https://github.com/tauri-apps/plugins-workspace/raw/v1/.github/sponsors/crabnebula.svg" alt="CrabNebula" width="283">
+        </a>
+      </td>
+    </tr>
+  </tbody>
+</table>
+
+For the complete list of sponsors please visit our [website](https://tauri.app#sponsors) and [Open Collective](https://opencollective.com/tauri).
+
 ## License
 
 Code: (c) 2015 - Present - The Tauri Programme within The Commons Conservancy.