Fix handling of cwd in tasks

This was causing detection of Flutter projects to not work (and not running "pub" through "flutter".

Prepare v3.16.0

Remove experiemental prefix from LSP setting

Prepare v3.15.1

Prepare v3.15.1

Add support for logging all DAP request/responses behind a flag

Log Flutter initialization to main log file

Fixes Dart-Code#2856.

Record when debug adapter starts / errors

Add temporary workaround for Theia

See eclipse-theia/theia#7690.

Support running Flutter apps without a VM Service connection

Fixes Dart-Code#2842.