Update Computer dialog UI

1. Replaced the three dots button to info icon
2. set tint color for header image button and
application icon
3. Make sure only set tint color if application
provides the metadata.
4. Including App name in the more info dialog.
5. Change the Ok button to Back

Test: atest CtsCompanionDeviceManagerCoreTestCases
      atest CtsCompanionDeviceManagerUiAutomationTestCases
      atest CtsOsTestCases:CompanionDeviceManagerTest

Bug: 216638097
Change-Id: Idba23ebc5cc21fc35676b0cccdb8d5b6ddf7af0a