added adr with user docs navigation proposal

doc/adr/0016-release-ordering.md

@@ -2,7 +2,7 @@
 
 ## Status
 
-Proposed
+Accepted
 
 ## Context
 

doc/adr/0017-documentation-categories-navigation.md

@@ -0,0 +1,52 @@
+# 0017. Defining user documentation categories 
+
+## Status
+
+Proposed
+
+## Context
+
+Weave GitOps user documentation could be found here https://docs.gitops.weave.works/docs/intro-weave-gitops/ 
+
+It has navigation menu on the left hand side ![documentation-navigation.png](imgs%2Fdocumentation-navigation.png)
+To help users finding relevant information in a natural way. 
+
+User documentation is regularly added by prodeng with two possible scenarios:
+- i am extending existing section so i dont need to do decisions in terms of navigation.
+- i am adding new page that might require a new navigation item so i need to do decision on where to add it.
+
+Given that we dont have explicit guidance on this topic, it is likely that two docs contributors might follow different 
+considerations that might resul in inconsistent navigtion translating into user experience degration. 
+
+In order to help mitigating this risk, we decide to raise this ADR that defines the principle ruling the navigation 
+design and the categories to think about when adding documentation that requires navigation.
+
+## Decision
+
+### Design Principles
+
+1. Navigation should intuitively follow the lifecycle of a platform engineer using the product.
+2. The lifecycle the Platfrom engineer transitions is:
+   - Platform engineer gets started with the product or day 1.
+   - Platform engineer gets started with the product features or day 1.
+   - After got started it gets into day 2 or operating the product. 
+   - After the platform engineer looks into how to expand the product reach by integrating with other tools.
+
+### Categories
+
+Matching the lifecycle, we have the following categories
+
+1. Introduction / Getting Started = Our current one
+2. Capabilities: it includes cluster mangements, gitopssets, etc …
+3. Operations -> this includes anything  ops: monitoring, logginc, etc
+4. Integrations -> other systems that we integrate  -> this includes Backstage
+5. Guides / Tutorials
+
+### Categories in Practice
+
+// to expand on why the existing documentation matches categories
+
+## Consequences
+
+Now we have some support to do aligned decisions regarding where to put new documentation that translates into new navigation items. 
+