[Doc] Organise installation documentation into categories and tabs (#11935)

Signed-off-by: Harry Mellor <19981378+hmellor@users.noreply.github.com>

docs/source/getting_started/installation/device.template.md

@@ -0,0 +1,17 @@
+# Installation
+
+## Requirements
+
+## Set up using Python
+
+### Pre-built wheels
+
+### Build wheel from source
+
+## Set up using Docker
+
+### Pre-built images
+
+### Build image from source
+
+## Extra information