feat: Tagline V3 (#5350)

* New JSON

* Tagline V3

* Refresh the tagline on language change

* Fix Lint errors

* Revert `SmoothScaffold` changes

* Filter news with startDate/endDate

packages/smooth_app/lib/helpers/strings_helper.dart

@@ -1,4 +1,4 @@
-import 'package:flutter/painting.dart';
+import 'package:flutter/material.dart';
 
 extension StringExtensions on String {
   /// Returns a list containing all positions of a [charCode]
@@ -93,3 +93,41 @@ class TextHelper {
     return parts;
   }
 }
+
+class FormattedText extends StatelessWidget {
+  const FormattedText({
+    required this.text,
+    this.textStyle,
+    this.textAlign,
+  });
+
+  final String text;
+  final TextStyle? textStyle;
+  final TextAlign? textAlign;
+
+  @override
+  Widget build(BuildContext context) {
+    final TextStyle defaultTextStyle = textStyle ?? const TextStyle();
+
+    return RichText(
+      text: TextSpan(
+        style: DefaultTextStyle.of(context).style,
+        children: TextHelper.getPartsBetweenSymbol(
+                text: text,
+                symbol: r'\*\*',
+                symbolLength: 2,
+                defaultStyle: defaultTextStyle,
+                highlightedStyle: const TextStyle(fontWeight: FontWeight.bold))
+            .map(
+          ((String, TextStyle?) part) {
+            return TextSpan(
+              text: part.$1,
+              style: defaultTextStyle.merge(part.$2),
+            );
+          },
+        ).toList(growable: false),
+      ),
+      textAlign: textAlign ?? TextAlign.start,
+    );
+  }
+}