fix: another arm none eabi fix

fix: missing new functions for arm none eabi toolchain

feat: update embedded.scm based on the code submitted to Guix patches

ruther: vhdl-ls: Update to 0.83

* ruther/packages/vhdl-ls.scm (rust-vhdl-lang-macros-0.82): Remove variable.
* ruther/packages/vhdl-ls.scm (rust-vhdl-lang-0.82): Remove variable.
* ruther/packages/vhdl-ls.scm (rust-vhdl-lang-macros-0.83): Add new variable.
* ruther/packages/vhdl-ls.scm (rust-vhdl-lang-0.83): Add new variable.
* ruther/packages/vhdl-ls.scm (vhdl-ls): Update to 0.83, along with dependencies.

fix: vhdl-ls missing vhdl_libraries

feat: add recursive python dep replacing

feat: add wheel to python toolchain

python-next: fix circular dependency and add function to replace python dependencies only

Cuts after going out of python dependencies, so stuff higher in the
tree won't get replaced as well.

fix: add libstdc++ CXXFLAGS, document with target subdir hack

fix: c++ include paths

The C include path has to be the latest! This is because
the cstdlib header uses #include_next <stdlib.h>, and
since the include of C headers comes first, stdlib.h is
not found!

fix: libstdc++ getentropy fix

The newlib does not expose getentropy in the final libraries,
but stil has it in the headers. That leads to configure thinking
getentropy is available and it will be used in the <random>.

feat: split arm 12.3 toolchain to non-nano and nano

fix: libstdc++ output lib path

chore: formatting

feat: add buildable libstdc++ to arm gcc toolchain 12.3

feat: add getdns and stubby

feat: arm toolchain 12.3.rel1

feat: add mpris-ctl, sequence-detector

feat: add spotify-qt package

fix: correctly replace with python 3.12