added notification some design and added item to navbar

lib/core/routes/app_shell/mobile_shell_page.dart

@@ -48,6 +48,22 @@ class MobileShellPage extends StatelessWidget {
               iconPath: AssetsManager.tenders,
               activeIconPath: AssetsManager.tendersActive,
             ),
+            _bottomNavigationItem(
+              context: context,
+              text: TendersStrings.contracts,
+              isActive: navigationShell.currentIndex == 4,
+              onTap: () => onTap(4),
+              iconPath: AssetsManager.contracts,
+              activeIconPath: AssetsManager.contracts,
+            ),
+            _bottomNavigationItem(
+              context: context,
+              text: TendersStrings.notifications,
+              isActive: navigationShell.currentIndex == 3,
+              onTap: () => onTap(3),
+              iconPath: AssetsManager.notify,
+              activeIconPath: AssetsManager.notifyActive,
+            ),
             _bottomNavigationItem(
               context: context,
               text: ProfileStrings.profileTitle,
@@ -76,7 +92,10 @@ class MobileShellPage extends StatelessWidget {
         width: 64.0.w(),
         height: 72.0.h(),
         child: Padding(
-          padding: EdgeInsets.only(top: 12.0.h(), bottom: 14.0.h()),
+          padding:
+              iconPath != AssetsManager.notify
+                  ? EdgeInsets.only(top: 12.0.h(), bottom: 14.0.h())
+                  : EdgeInsets.only(top: 6.0.h(), bottom: 12.0.h()),
           child: Column(
             mainAxisAlignment: MainAxisAlignment.spaceBetween,
             children: [
@@ -84,10 +103,11 @@ class MobileShellPage extends StatelessWidget {
 
               Text(
                 text,
+                maxLines: 1,
                 style: TextStyle(
-                  fontSize: 12.0.sp(),
+                  fontSize:
+                      iconPath == AssetsManager.notify ? 11.0.sp() : 12.0.sp(),
                   fontWeight: FontWeight.w400,
-
                   color: isActive ? AppColors.primaryColor : AppColors.grey60,
                 ),
               ),