architecture api page draft

Author: andrei-marinica

docs/developers/architecture/architecture-api.md

@@ -0,0 +1,40 @@
+---
+id: architecture-api
+title: SC API architecture
+---
+
+[comment]: # (mx-abstract)
+
+There is quite a long way from smart contract code to VM hook calls.
+
+[comment]: # (mx-context-auto)
+
+## Components overview
+
+```mermaid
+graph BT
+    sc[Smart Contract code]
+    sc --> wrapper[Api Wrapper]
+    wrapper --> api[Api]
+    api --> UncallableApi --> ABI
+    api --> VmApiImpl --> wasm-imports[Wasm FFI Imports]
+    wasm-imports --> wasm[.wasm binary] --> Wasmer
+    api --> VMHooksApi
+    Wasmer --> |hooks| capi[C API] --> go-vm[Go VM]
+    Wasmer -.->|hooks| TxContextStack
+    subgraph VMHooksApi["VMHooksApi<Backend>"]
+        StaticApi
+        DebugApi
+        SingleTxApi
+    end
+    DebugApi --> DebugApiBackend
+    DebugApiBackend ---->|hooks| TxContextStack
+    DebugApiBackend -->|static data| StaticVarStack
+    StaticApi --> StaticApiBackend
+    StaticApiBackend --->|hooks| STATIC_API_VH_CELL
+    StaticApiBackend -->|static data| STATIC_API_STATIC_CELL
+    SingleTxApi --> SingleTxApiBackend
+    SingleTxApiBackend --->|hooks| SINGLE_TX_API_VH_CELL
+    SingleTxApiBackend -->|static data| SINGLE_TX_API_STATIC_CELL
+    TxContextStack --> context[Rust VM]
+```

sidebars.js

@@ -128,6 +128,7 @@ const sidebars = {
             label: "Architecture",
             items: [
               "developers/architecture/architecture-overview",
+              "developers/architecture/architecture-api",
             ],
           },
         ],