This patch improves the documentation for the llext subsystem, adding
information onhow to configure the llext subsystem, how to build
extensions using the Zephyr build system, and how to load and use these
in a Zephyr application.
Signed-off-by: Luca Burelli <l.burelli@arduino.cc>
The existing index.rst file contains a mix of information about the
llext subsystem and the LLEXT Extension Development Kit (EDK). This
commit splits the existing text into two separate files, index.rst and
build.rst, as a first step on improving the documentation.
No change in text is done in this commit.
Signed-off-by: Luca Burelli <l.burelli@arduino.cc>
