ros_controllers: 0.7.0-0 in 'hydro/distribution.yaml' [bloom]

Increasing version of package(s) in repository `ros_controllers` to `0.7.0-0`:

- distro file: `hydro/distribution.yaml`
- bloom version: `0.5.2`
- previous version for package: `0.6.0-0`

## diff_drive_controller

```
* diff_drive_controller: New controller for differential drive wheel systems.
* Control is in the form of a velocity command, that is split then sent on the two wheels of a differential drive
wheel base.
* Odometry is published to tf and to a dedicated nav__msgs/Odometry topic.
* Realtime-safe implementation.
* Implements task-space velocity and acceleration limits.
* Automatic stop after command time-out.
* Contributors: Bence Magyar, Paul Mathieu, Enrique Fernandez.
```

## effort_controllers

- No changes

## force_torque_sensor_controller

- No changes

## forward_command_controller

- No changes

## gripper_action_controller

```
* gripper_action_controller: New controller for single dof grippers.
* Contributors: Sachin Chitta.
```

## imu_sensor_controller

- No changes

## joint_state_controller

- No changes

## joint_trajectory_controller

```
* Add support for an joint interfaces are not inherited from JointHandle.
* Contributors: Igorec
```

## position_controllers

- No changes

## ros_controllers

```
* Add diff_drive_controller and gripper_action_controller dependencies.
* Contributors: Adolfo Rodriguez Tsouroukdissian
```

## velocity_controllers

- No changes