* Parameters infer from body usage and call sites
* Function expressions infer from variable decl usages
If the function expression is the initialiser of a variable declaration.
* Update isApplicableFunctionForInference too
* Update baseline
* When --noUnusedLocals/--noUnusedParameters is disabled, add suggestions instead of errors
* Improve performance: do not add unused suggestion diagnostics unless asking for a suggestion
* Add "unused" flag to diagnostics
* Code review
* reportsUnused -> reportsUnnecessary
* Fix test