Add change note

Author: lcartey

change_notes/2024-10-15-lits-and-constants-10-4.md

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+ - `RULE-10-4` - `OperandswithMismatchedEssentialTypeCategory.ql`:
+   - Removed false positives where a specified or typedef'd enum type was compared to an enum constant type.
+ - `EssentialType` - for all queries related to essential types:
+   - `\n` and other control characters are now correctly deduced as essentially char type, instead of an essentially integer type.
+   - Enum constants for anonymous enums are now correctly deduced as an essentially signed integer type instead of essentially enum.