refactor: automate the process of adding new component templates

The current process for adding a new component template to the CLI is too manual and requires changes in several files each time a new component is added to the `templates` dir. Ideally, this all the files in the directory should be compiled without the need of making additional changes in the build script.
An example of the changes needed to add a template is available in the linked comment's PR.

> I think we might need to refactor this soon, in order to make it more automated, or otherwise building and adding each component manually won't scale well.

_Originally posted by @igamigo in https://github.com/0xMiden/miden-client/pull/1026#discussion_r2201574661_