Add openpilot tools

tools/cabana/README.md

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+# Cabana
+
+Cabana is a tool developed to view raw CAN data. One use for this is creating and editing [CAN Dictionaries](http://socialledge.com/sjsu/index.php/DBC_Format) (DBC files), and the tool provides direct integration with [commaai/opendbc](https://github.com/commaai/opendbc) (a collection of DBC files), allowing you to load the DBC files direct from source, and save to your fork. In addition, you can load routes from [comma connect](https://connect.comma.ai).
+
+## Usage Instructions
+
+```bash
+$ ./cabana -h
+Usage: ./cabana [options] route
+
+Options:
+  -h, --help                     Displays help on commandline options.
+  --help-all                     Displays help including Qt specific options.
+  --demo                         use a demo route instead of providing your own
+  --qcam                         load qcamera
+  --ecam                         load wide road camera
+  --stream                       read can messages from live streaming
+  --panda                        read can messages from panda
+  --panda-serial <panda-serial>  read can messages from panda with given serial
+  --socketcan <socketcan>        read can messages from given SocketCAN device
+  --zmq <zmq>                    the ip address on which to receive zmq
+                                 messages
+  --data_dir <data_dir>          local directory with routes
+  --no-vipc                      do not output video
+  --dbc <dbc>                    dbc file to open
+
+Arguments:
+  route                          the drive to replay. find your drives at
+                                 connect.comma.ai
+```
+
+See [openpilot wiki](https://github.com/commaai/openpilot/wiki/Cabana)