Added Generic Commands sending

Cargo.lock

Cargo.toml

src/main.rs

src/mavlink/reflection.rs

src/mavlink/reflection/conversion.rs

src/mavlink/reflection/fields.rs

src/mavlink/reflection/profile.rs

src/ui/panes.rs

src/ui/panes/command.rs

src/ui/panes/messages_viewer.rs

src/ui/panes/pid_drawing_tool.rs

src/ui/panes/pid_drawing_tool/symbols/icons/motor_valve.rs

src/ui/panes/pid_drawing_tool/symbols/value_display.rs

src/ui/panes/plot/source_window.rs