Switch to combined builder config

app/builder-config-x86_64.yaml

@@ -0,0 +1,27 @@
+extends: app/builder-config-base.yaml
+electronVersion: 4.1.5
+win:
+  target:
+    - NSIS
+  icon: app/icons/win/icon.ico
+linux:
+  target:
+    - target: deb
+      arch:
+        - x64
+    - target: appImage
+      arch:
+        - x64
+  icon: app/icons/png/
+  category: Science
+mac:
+  icon: app/icons/mac/icon.icns
+  category: public.app-category.utilities
+dmg:
+  contents:
+    - x: 110
+      y: 150
+    - x: 240
+      y: 150
+      type: link
+      path: /Applications