The description is not indented after line breaks. All other
information, i.e., the dependencies and SRCURI, are indented with
four spaces after line breaks. Shell scripts are indented with
multiples of four spaces.

In recipes-ros, I located and checked for tabulators and spacing
with these bash commands:

egrep '^ [^ ]+' . --exclude *.patch -R
egrep '^  [^ ]+' . --exclude *.patch -R
egrep '^   [^ ]+' . --exclude *.patch -R
egrep '^    [ ]+[^ ]+' . --exclude *.patch -R

While going through the recipes and manually improving the layout,
I also adjusted the descriptions to use maximal 100 characters
per line.

The geometry-experimental recipes are updated to 0.4.7 to be in line with
https://github.com/ros/rosdistro/blob/9cb0c7fb0565614f2b5482a8a6c9411ad7bf257c/hydro/release.yaml.

For the update of the tf package to the hydro release version,
new recipes for the geometry-experimental repository are provided
in this commit.