Large cleanup of AzureCore - Introduction of getAccountSecurityToken and deprecation of getSecurityToken (#11446)

* do a large cleanup of azurecore

* Fix tests

* Rework Device Code

* Fix tests

* Fix AE scenario

* Fix firewall rule - clenaup logging

* Shorthand syntax

* Fix firewall tests

* Start on tests for azureAuth

* Add more tests

* Address comments

* Add a few more important tests

* Don't throw error on old code

* Fill in todo

src/sql/azdata.proposed.d.ts

@@ -494,4 +494,14 @@ declare module 'azdata' {
 		name?: string;
 	}
 
+	export interface AccountProvider {
+		/**
+		 * Generates a security token for the provided account and tenant
+		 * @param account The account to generate a security token for
+		 * @param resource The resource to get the token for
+		 * @return Promise to return a security token object
+		 */
+		getAccountSecurityToken(account: Account, tenant: string, resource: AzureResource): Thenable<{ token: string } | undefined>;
+	}
+
 }