Add basic v2 architecture diagram

Signed-off-by: Yuri Shkuro <[email protected]>

cmd/jaeger/README.md

@@ -2,3 +2,32 @@
 
 This is experimental Jaeger V2 based on OpenTelemetry collector.
 See https://github.com/jaegertracing/jaeger/issues/4843.
+
+```mermaid
+flowchart LR
+    Receiver1 --> Processor
+    Receiver2 --> Processor
+    Receiver3 --> Processor
+    Processor --> Exporter
+
+    Exporter --> Database
+    Database --> Query[Query + UI]
+
+    subgraph Pipeline
+        Receiver1[OTLP Receiver]
+        Receiver2[Jaeger Proto Receiver]
+        Receiver3[Zipkin Receiver]
+        Processor[Batch
+            Processor]
+        Exporter[Jaeger
+            Storage
+            Exporter]
+    end
+
+    subgraph JaegerStorageExension[Jaeger Storage Ext]
+        Database[(Storage)]
+    end
+    subgraph JaegerQueryExtension[Jaeger Query Ext]
+        Query
+    end
+```