build: Windows icon improvements

package.json

@@ -48,6 +48,7 @@
       "package.json"
     ],
     "win": {
+      "icon": "assets/icon.png",
       "target": [
         "nsis",
         "portable"
@@ -82,6 +83,12 @@
       "license": "./LICENSE",
       "category": "Development"
     },
+    "nsis": {
+      "license": "./LICENSE",
+      "installerIcon": "assets/icon.ico",
+      "uninstallerIcon": "assets/icon.ico",
+      "installerHeader": "assets/icon.png"
+    },
     "portable": {
       "artifactName": "${productName}-${version}-portable.exe"
     },

src/main/main.ts

@@ -19,7 +19,7 @@ let mainWindow: BrowserWindow;
 let mainWindowState: windowStateKeeper.State;
 
 async function createMainWindow () {
-   const icon = require('../renderer/images/logo-32.png');
+   const icon = require('../renderer/images/logo-64.png');
    const window = new BrowserWindow({
       width: mainWindowState.width,
       height: mainWindowState.height,