feat: add some documentation

docs/ARCHITECTURE.md

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+# Nodarium Architecture
+
+The basic idea of nodarium is to use the advantages of WebAssembly to create a performant, secure and extandable visual programming language.
+
+The visual programming language consists of so called `Nodes` which are stored and distributed as single `.wasm` files. Each `node` receives some arguments and generates some output.
+
+## What is a node?
+
+```typescript
+type Node = {
+  id: string,
+  outputs: string[],
+  inputs: {
+    [key:string]: NodeInput
+  }
+}
+```
+
+## How are the arguments defined?
+To define which arguments a nodes accepts we use JSON. This json is embeded into the `.wasm` file of our node. An example `definition.json` file could look like this:
+
+```json
+{
+  "id": "my-name/my-namespace/zylinder-node",
+  "outputs": [
+    "geometry"
+  ],
+  "inputs": {
+    "height": {
+      "type": "float",
+      "value": 2
+    },
+    "radius": {
+      "type": "float",
+      "value": 0.5
+    }
+  }
+}
+```
+
+For a more in-depth explanation have a look at [./NODE_DEFINITION.md](NODE_DEFINITION.md).
+
+## How are the nodes executed?
+
+## How are the nodes stored?