Enabled Azure Arc data controller upgrade for direct and indirect mode (#19060)

* Fixed a connect to Server typo

* Added upgrade tab with description and title. Table is still stuck loading.

* Renamed backups to upgrades.

* Removed loading icon

* Table appearing and not stuck loading

* Saving for now to upgrade arc and azcli versions

* Added upgrade confirmation dialog, populated dummy data and added upgrade apis.

* Added parsing of versions and current version from listupgrades

* Upgrade itself not working, but added upgrade as a part of azure cli api.

* Table now populating with release dates and version numbers. Upgrade button only shows for appropriate cells. Upgrade done but no release version column.

* Changed text using PM advice

* Removed comments from controllerUpgrades.ts

* Replaced code in upgradecontroller.ts and made refresh work

* Removed one call to handleTablesUpdated

* Removed some code in upgradeControllers.ts and it still works

* removing more code for pitr refresh from upgradeController.ts

* Created and used UpgradeModel even though it is empty

* Added upgrademodel

* PR comments addressed

Co-authored-by: Candice Ye <canye@microsoft.com>

extensions/azcli/src/localizedConstants.ts

@@ -72,3 +72,4 @@ export const userResponseToInstallPrompt = (response: string | undefined): strin
 export const userResponseToUpdatePrompt = (response: string | undefined): string => localize('az.userResponseUpdate', "User Response on prompt to update Azure CLI: {0}", response);
 export const userRequestedInstall = localize('az.userRequestedInstall', "User requested to install Azure CLI and arcdata extension using 'Azure CLI: Install' command");
 export const updateCheckSkipped = localize('az.updateCheckSkipped', "No check for new Azure CLI version availability performed as Azure CLI was not found to be installed");
+export const releaseDateNotParsed = localize('arc.releaseDateNotParsed', "Release date could not be parsed.");