Fixing NPM package generation

The generation was broken due to the refactoring in several classes (some of them where not properly exported).
Also, trying to generate the NPM package on every build now (to detect issues).

.github/workflows/push-to-npm.yml

@@ -2,6 +2,7 @@ name: Push @workadventure/iframe-api-typings to NPM
 on:
   release:
     types: [created]
+  push:
 jobs:
   build:
     runs-on: ubuntu-latest
@@ -52,6 +53,9 @@ jobs:
       - name: Copy typings to package dir
         run: cp front/dist/src/iframe_api.d.ts front/packages/iframe-api-typings/iframe_api.d.ts
 
+      - name: Copy typings to package dir (2)
+        run: cp -R front/dist/src/Api front/packages/iframe-api-typings/Api
+
       - name: Install dependencies in package
         run: yarn install
         working-directory: "front/packages/iframe-api-typings"
@@ -61,3 +65,4 @@ jobs:
         working-directory: "front/packages/iframe-api-typings"
         env:
           NODE_AUTH_TOKEN: ${{ secrets.NPM_TOKEN }}
+        if: ${{ github.event_name == 'release' }}