Merge branch 'add-example-policy' into 'main'

Add example policy

See merge request !1

README.md

 # Policies Repository
 
-The Policies Repository contains REGO policies for **development purposes only**
+The Policies Repository contains REGO policies used for evaluation.
 
 ### Add Policy
 
-You should follow the following syntax:
+You should follow the following naming syntax:
 - Policy name must follow the following syntax: `{name}_{version}.rego`  
     > Example: loginpolicy_1.2.rego
 - Policies are grouped in directories representing their organisation: `{group}/{policyName}_{version}.rego`
     > Example: gaiax/loginpolicy_1.0.rego
+- The policy package must follow the following syntax: `{group}.{policyName}`
+    > Example: package gaiax.loginpolicy
 

example/examplePolicy_0.8.rego

+package example.examplePolicy
+
+default allow = false
+
+allow {
+    input.method == "GET"
+    input.path == ["salary", input.subject.user]
+}
+
+allow {
+    is_admin
+}
+
+is_admin {
+    input.subject.groups[_] == "admin"
+}
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