feat: implement retreiving widgets

- display a bottom sheet with widgets
- open widgets in a browser
- fixes in .gitignore
- Windows UWP build files

Signed-off-by: TheOneWithTheBraid <the-one@with-the-braid.cf>

winuwp/runner_uwp/appxmanifest.in

@@ -0,0 +1,42 @@
+<?xml version="1.0" encoding="utf-8"?>
+<Package
+  xmlns="http://schemas.microsoft.com/appx/manifest/foundation/windows10"
+  xmlns:mp="http://schemas.microsoft.com/appx/2014/phone/manifest"
+  xmlns:uap="http://schemas.microsoft.com/appx/manifest/uap/windows10"
+  IgnorableNamespaces="uap mp">
+
+  <Identity Name="@PACKAGE_GUID@" Publisher="CN=CMake Test Cert" Version="1.1.0.0" />
+  <mp:PhoneIdentity PhoneProductId="@PACKAGE_GUID@" PhonePublisherId="00000000-0000-0000-0000-000000000000"/>
+
+  <Properties>
+    <DisplayName>@SHORT_NAME@</DisplayName>
+    <PublisherDisplayName>CMake Test Cert</PublisherDisplayName>
+    <Logo>Assets/StoreLogo.png</Logo>
+  </Properties>
+
+  <Dependencies>
+    <TargetDeviceFamily Name="Windows.Universal" MinVersion="10.0.0.0" MaxVersionTested="10.0.65535.65535" />
+  </Dependencies>
+
+  <Resources>
+    <Resource Language="x-generate" />
+  </Resources>
+  <Applications>
+    <Application Id="App" Executable="$targetnametoken$.exe" EntryPoint="@SHORT_NAME@.App">
+      <uap:VisualElements
+        DisplayName="@SHORT_NAME@"
+        Description="@SHORT_NAME@"
+        BackgroundColor="#336699"
+        Square150x150Logo="Assets/Square150x150Logo.png"
+        Square44x44Logo="Assets/Square44x44Logo.png"
+        >
+        <uap:SplashScreen Image="Assets/SplashScreen.png" />
+      </uap:VisualElements>
+    </Application>
+  </Applications>
+   <Capabilities>
+    <Capability Name="internetClientServer"/>
+    <Capability Name="internetClient"/>
+    <Capability Name="privateNetworkClientServer"/>
+    <Capability Name="codeGeneration"/></Capabilities>
+</Package>