Niagara and Metasound nodes WIP

* Keep track of entities

* Fix renaming

* Niagara variables wip

* Several niagara decode and test

* Move nodeTemplate code to dedicated file, self node added

* Move node decoding functions to dedicated files

* Move pin decoding logic to dedicated files

* Accept space separated keys in objects

* Build

* Prevent a crash in case of incomplete object

* Avoid creating objects unnecessarily

* types formatting

* Initial metasound style

* Common pcg nodes colors

* Fix string serialization

* Metasound new styles and fixes

* More metasound styles and colors

* WIP

* Several fixes

* More tests and fixes

* Clean gitignore

js/entity/Vector4DEntity.js

@@ -0,0 +1,44 @@
+import Grammar from "../serialization/Grammar.js"
+import AttributeInfo from "./AttributeInfo.js"
+import IEntity from "./IEntity.js"
+
+export default class Vector4DEntity extends IEntity {
+
+    static attributes = {
+        ...super.attributes,
+        X: new AttributeInfo({
+            default: 0,
+            expected: true,
+        }),
+        Y: new AttributeInfo({
+            default: 0,
+            expected: true,
+        }),
+        Z: new AttributeInfo({
+            default: 0,
+            expected: true,
+        }),
+        W: new AttributeInfo({
+            default: 0,
+            expected: true,
+        }),
+    }
+    static grammar = this.createGrammar()
+
+    static createGrammar() {
+        return Grammar.createEntityGrammar(Vector4DEntity, false)
+    }
+
+    constructor(values) {
+        super(values)
+        /** @type {Number} */ this.X
+        /** @type {Number} */ this.Y
+        /** @type {Number} */ this.Z
+        /** @type {Number} */ this.W
+    }
+
+    /** @returns {[Number, Number, Number, Number]} */
+    toArray() {
+        return [this.X, this.Y, this.Z, this.W]
+    }
+}