init and loadVcd sequence diagrams

Author: drom

docs/README.md

@@ -1,5 +1,37 @@
+### Initialization
 
 ```mermaid
 sequenceDiagram
-  a-->>b: hello
-```
+  participant C as client
+  create participant W as worker
+  C->>W : start Worker
+  C-)W : loadWasm
+  create participant A as wasm
+  W->>A : instantiate Wasm
+  create participant M as Memory
+  A->>M : allocate shared memory
+  A-->>W : 
+  W--)C : wasmMemory
+```
+
+### loadVcd
+
+```mermaid
+sequenceDiagram
+  participant C as client
+  participant W as worker
+  participant A as wasm
+  participant M as Memory
+  C-)W : loadVcd(URL)
+  W->>A : init
+  create participant S as server
+  W->>S : fetch
+  loop [per chunk]
+    S-->>W : resp
+    W->>M : write input fuffer
+    W->>+A : chunk()
+    A-->>-W: return()
+    W-)C : stats
+  end
+  W--)C : loadVcdDone
+```