feat(developer): provide line number for some kmw compiler messages

Fixes #9931.

Provide additional line and file context for some KeymanWeb
compiler messages. This change requires debug data in the intermediate
kmx data provided to the kmw compiler, which should have no impact on
the final .js if debug=false.

This commit only addresses line number data in
Error_NotSupportedInKeymanWebContext and
Error_NotSupportedInKeymanWebOutput.

There are other compiler messages which could benefit from this data:
  * Warn_OptionStoreNameInvalid
  * Error_VirtualCharacterKeysNotSupportedInKeymanWeb
  * Error_VirtualKeysNotValidForMnemonicLayouts
  * Warn_ExtendedShiftFlagsNotSupportedInKeymanWeb
  * Hint_UnreachableKeyCode
  * Error_NotSupportedInKeymanWebStore
  * Warn_HelpFileMissing
  * Warn_EmbedJsFileMissing
  * Error_NotAnyRequiresVersion14