Describe the samples using code-sample directive in preparation for
upcoming changes to the Zephyr documentation that will be leveraging
the provided description and metadata.
Also fixed a couple invalid or missing table of contents to have
proper document hierarchy.
Signed-off-by: Benjamin Cabé <benjamin@zephyrproject.org>
lz4 is moved as optional module, add step in README to add
as project filter to include into west manifest.
Fixes: https://github.com/zephyrproject-rtos/zephyr/issues/65127
Signed-off-by: Parthiban Nallathambi <parthiban@linumiz.com>
all the external modules related samples are part of samples/modules,
whereas lz4 is in parent. move it to sample/modules/compression/lz4
Signed-off-by: Parthiban Nallathambi <parthiban@linumiz.com>
