add thank you page to docs [no build]

docs/thanks.md

@@ -0,0 +1,13 @@
+[<img src="https://resources.jetbrains.com/storage/products/company/brand/logos/jb_beam.png" alt="JetBrains" width="128"/>](https://www.jetbrains.com)
+
+Thank you to [JetBrains](https://www.jetbrains.com) for providing free licenses to their awesome tools, including:
+
+- [Rider](https://www.jetbrains.com/rider)
+- [DataGrip](https://www.jetbrains.com/datagrip)
+
+<br />
+<br />
+
+[<img src="../images/bugsnag.svg" alt="Bugsnag" width="256"/>](https://www.bugsnag.com)
+
+Thank you to [Bugsnag](https://www.bugsnag.com) for providing a free license to their app health monitoring software.

mkdocs.yml

@@ -11,6 +11,7 @@ nav:
     - 'Local Libraries': 'user-guide/local-libraries.md'
     - 'Search': 'user-guide/search.md'
     - 'Sample Schedules': 'user-guide/sample-schedules.md'
+  - 'Thanks': 'thanks.md'
 theme:
   name: material
   palette: