added premium button to settings

lib/ui/mobile/premium/settings_inline.dart

@@ -0,0 +1,69 @@
+import 'package:flutter/material.dart';
+import 'package:refilc_mobile_ui/premium/plus_screen.dart';
+
+class PlusSettingsInline extends StatelessWidget {
+  const PlusSettingsInline({super.key});
+
+  @override
+  Widget build(BuildContext context) {
+    return Padding(
+      padding: const EdgeInsets.symmetric(horizontal: 24.0),
+      child: GestureDetector(
+        onTap: () {
+          Navigator.of(context, rootNavigator: true)
+              .push(MaterialPageRoute(builder: (context) {
+            return const PlusScreen();
+          }));
+        },
+        child: Container(
+          width: double.infinity,
+          decoration: BoxDecoration(
+            image: const DecorationImage(
+              image: AssetImage('assets/images/btn_plus_standard.png'),
+              fit: BoxFit.fitWidth,
+            ),
+            borderRadius: BorderRadius.circular(12.0),
+          ),
+          padding: const EdgeInsets.all(16.0),
+          child: Row(
+            mainAxisAlignment: MainAxisAlignment.spaceBetween,
+            children: [
+              Row(
+                mainAxisAlignment: MainAxisAlignment.start,
+                children: [
+                  const SizedBox(
+                    width: 2.0,
+                  ),
+                  Image.asset(
+                    'assets/images/plus_tier_cap.png',
+                    width: 23.0,
+                    height: 23.0,
+                  ),
+                  const SizedBox(
+                    width: 14.0,
+                  ),
+                  const Text(
+                    'reFilc+',
+                    style: TextStyle(
+                      color: Color(0xFF150D4E),
+                      fontSize: 18.0,
+                      fontWeight: FontWeight.w600,
+                    ),
+                  ),
+                ],
+              ),
+              const Text(
+                '0.99 €',
+                style: TextStyle(
+                  color: Color(0xFF150D4E),
+                  fontSize: 15.0,
+                  fontWeight: FontWeight.w500,
+                ),
+              ),
+            ],
+          ),
+        ),
+      ),
+    );
+  }
+}