Add the source code of our website to SharezoneApp/sharezone-app re…

…pository

This PR adds the [SharezoneApp/website](https://github.com/SharezoneApp/sharezone-app) to our `SharezoneApp/sharezone-app` repository while keeping the git history (requires a normal merge instead of a squash merge) and moving the code into the `website` directory. After the merge, I removed the `.fvm` and `.github` folder.

In the future PRs I will add things like CI/CD, auto-label, `sz deploy website` command, etc.

website/.firebaserc

@@ -0,0 +1,22 @@
+{
+  "projects": {
+    "dev": "sharezone-debug",
+    "prod": "sharezone-c2bd8"
+  },
+  "targets": {
+    "sharezone-c2bd8": {
+      "hosting": {
+        "sharezone-website": [
+          "sharezone-webseite"
+        ]
+      }
+    },
+    "sharezone-debug": {
+      "hosting": {
+        "sharezone-website": [
+          "sharezone-debug"
+        ]
+      }
+    }
+  }
+}

website/.gitignore

@@ -0,0 +1,50 @@
+# Miscellaneous
+*.class
+*.log
+*.pyc
+*.swp
+.DS_Store
+.atom/
+.buildlog/
+.history
+.svn/
+
+# IntelliJ related
+*.iml
+*.ipr
+*.iws
+.idea/
+
+# The .vscode folder contains launch configuration and tasks you configure in
+# VS Code which you may wish to be included in version control, so this line
+# is commented out by default.
+#.vscode/
+
+# Flutter/Dart/Pub related
+**/doc/api/
+**/ios/Flutter/.last_build_id
+.dart_tool/
+.flutter-plugins
+.flutter-plugins-dependencies
+.packages
+.pub-cache/
+.pub/
+/build/
+
+# Web related
+lib/generated_plugin_registrant.dart
+
+# Symbolication related
+app.*.symbols
+
+# Obfuscation related
+app.*.map.json
+
+#firebase
+.firebase/
+
+# FVM will create a relative symlink in your project from .fvm/flutter_sdk to
+# the cache of the selected version. We should add this to our .gitignore.
+#
+# Source: https://fvm.app/docs/getting_started/configuration#project
+.fvm/flutter_sdk

website/analysis_options.yaml

@@ -0,0 +1,9 @@
+# Copyright (c) 2023 Sharezone UG (haftungsbeschränkt)
+# Licensed under the EUPL-1.2-or-later.
+#
+# You may obtain a copy of the Licence at:
+# https://joinup.ec.europa.eu/software/page/eupl
+#
+# SPDX-License-Identifier: EUPL-1.2
+
+include: package:flutter_lints/flutter.yaml