[Feature Request]: Allow order of operations on prompt parser

Is there an existing issue for this?

[X] I have searched the existing issues and checked the recent builds/commits

What would your feature do ?

Imagine the next prompt:

a cat AND a dog BREAK on a beach

Here this prompt can be parsed on 2 different ways:

a cat ━━━┓
         ┣━━┓
a dog ━━━┛  ┃
on a beach ━┻━━ OUTPUT

a cat ━━━━━━━━━━━┳━━ Output
a dog ━━━━━━━━┓  ┃
              ┣━━┛
on a beach ━━━┛

Both ways ends up with a different result. (drawing this ended up being more difficult than it looks) My proposal is to do something similar to how math works, by a parenthesis-equivalent keywords, something like BEGIN/END so by doing that, now:

BEGIN a cat AND a dog END BREAK on a beach

and

a cat AND BEGIN a dog BREAK on a beach END

This is also relevant since other extensions create their own keywords and usually collide since there is no way to express order of operations. Having a native to the tool way of doing it might force the extension developers to respect them as well.

Proposed workflow

No change on workflow, just a couple of keywords.

Additional information

No response

AUTOMATIC1111 / stable-diffusion-webui