Add support for Angular 16

[SDAdham]

Hello, post upgrading angular to 16, i am getting the following error: Error: Unexpected value 'AvatarModule' imported by the module. Please add an @NgModule annotation.

[DanielLeushuis]

+1 seems like this project is abandoned

[nerumo]

I created a merge request for angular 20 upgrade:

#165

for those wanting the package already: https://www.npmjs.com/package/@triarc-labs/ngx-avatar