📝 (README.md): update README with podcast details and development info

Enhance the README to provide a more comprehensive overview of the
AgileActually.com podcast, including its purpose and how users can
contribute topics or guest suggestions. Add sections for production
and preview URLs, and explain the development process, including
dynamic site creation for each pull request. This improves clarity
and engagement for contributors and listeners.

Author: MrHinsh

README.md

@@ -1,3 +1,14 @@
-# Agile Actually.com
+# AgileActually.com
 
-Information for decision-makers considering large consultancy firms’ Agile offering
+Welcome to Agile Actually, the podcast that brings you authentic agile concepts, insights, and wisdom from two of the most respected, progressive agile experts in the industry.
+
+We'd love your input! If you have topics you'd like us to discuss or people you'd like us to include in the podcast, please add your suggestions in the **Discussions** section of this repository.
+
+# Engineering Bits
+
+- Production: https://agileactually.com | https://blue-sea-02457da03.5.azurestaticapps.net
+- Preview: https://blue-sea-02457da03-preview.westeurope.5.azurestaticapps.net/
+
+## Development
+
+A new site is created for each pull request as https://blue-sea-02457da03-{{PullRequestID}}.westeurope.5.azurestaticapps.net/