Article about Daml operator precedence

[roger-bosman-da]

Operator precedence: Document operator precedence, e.g., a + b * c = a * (b * c) and
operator associativity, e.g., a / b * c = (a / b) * c.

This document has been identified as necessary to improve the security of the language. It has been argued that not having this may lead to inadvertent bugs

Issue canton-side: https://github.com/DACH-NY/docs-website/issues/1308