[Tizen] Enhances the shell renderer

[myroot]

Description of Change

In this PR, the existing shell renderer has been improved as follows.

• Refactoring code
  • Removes the Tizen.Material shell renderer (Looks little bit different from normal but Tizen.NET.MaterialComponents not satisfy implementation requirement)
• Fixes many bugs
  • TitleView was not shown
  • Title was not shown with defaut color
  • TabBarBackgroundColor was not used
• Implements new features

Property	Description
Shell.FlyoutIcon
Shell.FlyoutHeaderBehavior
Shell.ItemTemplate / Shell.ItemTemplate
Shell.FlyoutBehavior	- Support FlyoutBehavior.Disabled, FlyoutBehavior.Flyout
SearchHandler
Shell.TabBarIsVisible	- Support Top TabBar visibility

• Support multiple screen size scaling
  

Issues Resolved

• fixes #

API Changes

• Added (Support on tizen)
  • ImageSource Shell.FlyoutIcon
  • FlyoutHeaderBehavior Shell.FlyoutHeaderBehavior
  • DataTemplate Shell.ItemTemplate
  • DataTemplate Shell.MenuItemTemplate
  • FlyoutBehavior Shell.FlyoutBehavior
  • bool Shell.TabBarIsVisible
  • class SearchHandler

Platforms Affected

• Tizen

Behavioral/Visual Changes

None

Before/After Screenshots

Not applicable

Testing Procedure

PR Checklist

• Targets the correct branch
• Tests are passing (or failures are unrelated)

[rookiejava]

This PR is improving many parts of the shell related implementation for various Tizen devices. To verify this, we internally performed a testing for about 2~3 weeks and confirmed now.