Add LaTeXfonts rule to LaTeX role

* It has been tested to run on two different systems (installed, not
installed fonts)
* Still does not work if fonts are installed, but not registered, but
that is only a case for broken systems

roles/latex/tasks/main.yml

 ---
  - include: LateX.yml
    tags: install
-   #- include: LaTeXfonts.yml
-   #tags: fonts
+ - include: LaTeXfonts.yml
+   tags: fonts
  - include: KITLaTeX.yml
    tags: kit
  - include: AxelsBST.yml