Bugfix/nicolas bufixes (#491)

* UPDATE: package lock

* FIX: Add function definitions

* FIX: Small fix to get FACT working

* FIX: We only need integer FACT and FACTDOUBLE

* FIX: Make clippy happy

webapp/IronCalc/package-lock.json

@@ -40,7 +40,7 @@
     },
     "../../bindings/wasm/pkg": {
       "name": "@ironcalc/wasm",
-      "version": "0.5.0",
+      "version": "0.6.0",
       "license": "MIT/Apache-2.0"
     },
     "node_modules/@adobe/css-tools": {