(feat): Init concept of coming soon landing page

server.py

@@ -1,10 +1,26 @@
-from flask import Flask, render_template
+# noinspection PyPackageRequirements
+from flask import Flask, render_template, request, jsonify
+
+from database import init_db, add_email
 
 app = Flask(__name__)
+init_db()
 
 @app.route("/")
 def index():
     return render_template("index.html")
 
+@app.route("/subscribe", methods=["POST"])
+def subscribe():
+    data = request.get_json()
+    email = data.get('email')
+    if not email:
+        return jsonify({"error": "No email provided"}), 400
+
+    if add_email(email):
+        return jsonify({"message": "Email has been added"}), 201
+    else:
+        return jsonify({"error": "Email already exists"}), 400
+
 if __name__ == "__main__":
     app.run(debug=True)