* Fix this madness

Simplify implementation by debugging in an ego-centric way always.

Since the KISS-ICP internal map is on the global coordinates, fetch the
last ego-centric pose and apply it to the map. Seen from the
cloud_frame_id (which is the sensor frame) everything should always work
in terms of visualization, no matter the multi-sensor setup.

* Now is safe to disable this by default

* Simplify, borrow the header from the input pointcloud msg

This actually makes the visualization closer to the Python visualizer

* Disable path/odom visualization by default

In the case where we are not computing the poses in an egocentric world
(base_frame != "") and we are not publishing to the TF tree, then the
visualization wouldn't make sense. Therefore, disable it by default

* Changed my mind

If someone doesn't have that particular frame defined, then the
visualization won't work. Leave this default

* Move responsability of handling tf frames out of Registration (#288)

* Move responsability of handling tf frames out of Registration

Since with this new changes PublishOdometry is the only member that
requieres to know the user specified target-frame, it is not necesary to
handle all this bits.

This makes the implementation cleaner, easier to read and reduces the
lines of code. Now RegisterFrame is a simple callback as few months ago
one can read in seconds.

* typo

* Easier to read

* We need this for LookupTransform

* Remove unused variable

* Revert "Remove unused variable"

This reverts commit 424ee90.

* Remove unnecessary check

* Remove unnecessary exposed utility function from ROS API

With this change this function is not exposed (which was never the
intention to) to the header. This way we can also "hide" this into a
private unnamed namesapces and benefit from inlining the simple function
into the translation unit

* Revert "Remove unnecessary exposed utility function from ROS API"

This reverts commit 23cd7ef.

* Revert "Remove unnecessary check"

This reverts commit d1dcb48.

* merge conflicts :0

* Remove unnecessary exposed utility function from ROS API (#289)

* Move responsability of handling tf frames out of Registration

Since with this new changes PublishOdometry is the only member that
requieres to know the user specified target-frame, it is not necesary to
handle all this bits.

This makes the implementation cleaner, easier to read and reduces the
lines of code. Now RegisterFrame is a simple callback as few months ago
one can read in seconds.

* typo

* Easier to read

* We need this for LookupTransform

* Remove unused variable

* Revert "Remove unused variable"

This reverts commit 424ee90.

* Remove unnecessary check

* Remove unnecessary exposed utility function from ROS API

With this change this function is not exposed (which was never the
intention to) to the header. This way we can also "hide" this into a
private unnamed namesapces and benefit from inlining the simple function
into the translation unit

* Revert "Remove unnecessary exposed utility function from ROS API"

This reverts commit 23cd7ef.

* Remove unnecessary exposed utility function from ROS API

With this change this function is not exposed (which was never the
intention to) to the header. This way we can also "hide" this into a
private unnamed namesapces and benefit from inlining the simple function
into the translation unit

* Revert "Remove unnecessary check"

This reverts commit d1dcb48.

---------

Co-authored-by: tizianoGuadagnino <frevo93@gmail.com>

* too many merges

* Merge Rviz and Python colors

* Just make the default construction more clear

---------

Co-authored-by: tizianoGuadagnino <frevo93@gmail.com>

…-covariance' into 296-autocompute-icp-covariance