Add proper GHCHints for most PsMessage constructors

This commit adds proper hints to most diagnostic types in the
`GHC.Parser.Errors.Types` module. By "proper" we mean that previous to
this commit the hints were bundled together with the diagnostic message,
whereas now we moved most of them as proper `[GhcHint]` in the
implementation of `diagnosticHints`.

More specifically, this is the list of constructors which now has
proper hints:

* PsErrIllegalBangPattern
* PsWarnOperatorWhitespaceExtConflict
* PsErrLambdaCase
* PsErrIllegalPatSynExport
* PsWarnOperatorWhitespace
* PsErrMultiWayIf
* PsErrIllegalQualifiedDo
* PsErrNumUnderscores
* PsErrLinearFunction
* PsErrIllegalTraditionalRecordSyntax
* PsErrIllegalExplicitNamespace
* PsErrOverloadedRecordUpdateNotEnabled
* PsErrIllegalDataTypeContext
* PsErrSemiColonsInCondExpr
* PsErrSemiColonsInCondCmd
* PsWarnStarIsType
* PsWarnImportPreQualified
* PsErrImportPostQualified
* PsErrEmptyDoubleQuotes
* PsErrIllegalRoleName
* PsWarnStarBinder

For some reason, this patch increases the peak_megabyte_allocated of
the T11545 test to 90 (from a baseline of 80) but that particular test
doesn't emit any parsing diagnostic or hint and the metric increase
happens only for the `aarch64-linux-deb10`.

Metric Increase:
    T11545