Add initial unit tests

Signed-off-by: Lei YU <yulei.sh@bytedance.com>
Change-Id: Id4850e52073ea6780a978c6cd5a5c439aa8ed846
diff --git a/meson_options.txt b/meson_options.txt
index 7b1d3da..22a4404 100644
--- a/meson_options.txt
+++ b/meson_options.txt
@@ -1,3 +1,5 @@
+option('tests', type: 'feature', description: 'Build tests')
+
 option('BIOS_OBJPATH',
        type: 'string',
        value: '/xyz/openbmc_project/software/bios_active',