Rework WebApi.cs to use HttpClient (#1584)

* Rewrk webapi.cs to use HttpClient

* only run code signing when secrets are configured

* Workaround to check if secret is present or not

* apply it to all azure steps...

* dont replace cookie container, reuse managed object

* Fix adding MD5

---------

Co-authored-by: Natsumi <cmcooper123@hotmail.com>

src/types/globals.d.ts

@@ -408,10 +408,11 @@ declare global {
             uploadFilePUT?: boolean;
             fileData?: string;
             fileMIME?: string;
+            fileMD5?: string;
             headers?: Record<string, string>;
             data?: any;
         }): Promise<{ status: number; data: string }>;
     };
 }
 
-export { };
+export {};