pystencils API updates & features for sweep gen

 - Fix type printing after changes in pystencils
 - Introduce casting of indexing symbols in field mapping
 - Extend class composer's constructor builder to allow incremental
   building
 - Introduce a utility for stripping pointers and refs from a type

Squashed commit of the following:

commit 6d54f2ca
Author: Frederik Hennig <frederik.hennig@fau.de>
Date:   Mon Nov 18 16:47:18 2024 +0100

    fix a doctest

commit 2e54c7a0
Author: Frederik Hennig <frederik.hennig@fau.de>
Date:   Fri Nov 15 15:37:49 2024 +0100

    Fix data type printing

commit 1397bcb2
Author: Frederik Hennig <frederik.hennig@fau.de>
Date:   Thu Nov 7 14:51:10 2024 +0100

    some minor API changes

commit 2ba2fd8d
Author: Frederik Hennig <frederik.hennig@fau.de>
Date:   Wed Nov 6 15:29:36 2024 +0100

    Add `parameters` property to SfgClassComposer

commit 1a30d202
Author: Frederik Hennig <frederik.hennig@fau.de>
Date:   Tue Oct 29 17:04:19 2024 +0100

    Extend ConstructorBuilder to allow incremental addition of parameters. Fix test cases for PPing.

commit d0b8fff9
Merge: 2977b58c d3e347f2
Author: Frederik Hennig <frederik.hennig@fau.de>
Date:   Tue Oct 29 09:20:23 2024 +0100

    Merge branch 'master' into lbwelding-features

commit 2977b58c
Author: Frederik Hennig <frederik.hennig@fau.de>
Date:   Tue Oct 29 09:17:30 2024 +0100

    Introduce casts to indexing symbols in field extraction