Add change note

Author: lcartey

change_notes/2024-09-17-essential-types-unary.md

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+ - `RULE-10-1` - `OperandsOfAnInappropriateEssentialType.ql`
+   - Reduce false negatives by supporting operands to the `~` operator with the incorrect essential type.
+   - Reduce false positives by identifying the essential type of `!<expr>` as essentially boolean type.
+   - Improve clarity reporting by reporting the violating operand, instead of the operator, and addressing message typos.