fix(session_text): Try to find zephyr if build with cmake
* Add a define "WEST_PYTHON" to control it, just same as other sample. Signed-off-by: 徐宪辉 <xhxu@listenai.com>
* Add a define "WEST_PYTHON" to control it, just same as other sample. Signed-off-by: 徐宪辉 <xhxu@listenai.com>