* Added Dremio preview example
Signed-off-by: Josh Howard <joshthoward@gmail.com>

* Checkpoint on flight preview
Signed-off-by: Josh Howard <joshthoward@gmail.com>

* Reworked flight preview to construct new client on each invocation; somehow reduces loading times
Signed-off-by: Josh Howard <joshthoward@gmail.com>

* Updated table icon and sources link to include Dremio
Signed-off-by: Josh Howard <joshthoward@gmail.com>

* Fixed flake errors
Signed-off-by: Josh Howard <joshthoward@gmail.com>

* Fixed code review comments
Signed-off-by: Josh Howard <joshthoward@gmail.com>