Add info - When not to use Radix

[emirgens]

In the Getting started section, add a new page
When not use Radix
These are not supported in Radix, however some can be done using workarounds

some info....
No direct on-prem connectivity
Need to use own terraform configurations
Need to use own helm charts or flux
Need to use DAPR
Need to use sidecars
Need to have direct access to Kubernetes components (pods, secrets, etc.)
Need low-latency persistant storage (eg. databases and similar)
Needs to accept traffic other than HTTP (eg. mqtt or UDP)
need to run own operators (e.g. redis operator to run Redis database in cluster)

[emirgens]

Feedback from DynaGeo team:
https://github.com/equinor/dynageo/issues/4128