Added beta page

Author: mrvisscher

docs/beta.md

@@ -0,0 +1,31 @@
+---
+title: Beta
+nav_order: 1
+---
+# Activity Browser 3 Beta
+{: .fs-9 }
+
+We need your help to make the Activity Browser better.
+{: .fs-6 .fw-300 }
+
+[Report an issue with the Beta](https://github.com/LCA-ActivityBrowser/activity-browser/issues/new?template=beta_report.yml){: .btn .btn-primary .fs-5 .mb-4 .mb-md-0 .mr-2 }
+
+The Activity Browser 3 Beta is a preview of the next major version of the Activity Browser. It includes many new features and improvements, but it is still in development and may contain bugs. We are looking for you to test the beta and provide feedback on their experience.
+
+## Installation
+Installing the beta is simple and described in the [installation guide](getting-started/installation.md).
+
+#### Quick-Install PyPI
+```
+pip install activity-browser
+```
+
+#### Quick-Install Anaconda
+```
+conda create -n ab_beta -c conda-forge lca::activity-browser
+conda activate ab_beta
+pip install PySide6
+```
+
+## Reporting issues
+If you encounter any issues while using the Activity Browser 3 Beta, please report them on our [GitHub issues page](https://github.com/LCA-ActivityBrowser/activity-browser/issues/new?template=beta_report.yml). The more reports the better, so please don't hesitate to report any problems you encounter.