* chore: remove dead code
* refactor: move FluxLanguageService interface to fluxlang
* chore: run fmt
* refactor: move task.go from top level to task/taskmodel
* chore: run formatter
* chore: fix up import ordering with gci
The tasks subsystem will now use the flux language service to parse and
evaluate flux instead of directly interacting with the parser or
runtime. This helps break the dependency on the libflux parser for the
base influxdb package.
This includes the task notification packages which were changed at the
same time.
Sam Arnold
Daniel Moran
Jonathan A. Sternberg
Christopher M. Wolff
Nathaniel Cook