* Add build script to build imx project

TEST:
export IMX_SDK_ROOT=${PATH_TO_IMX8_YOCTO_SDK}
or
source ${PATH_TO_IMX8_YOCTO_SDK}/environment-setup-cortexa53-crypto-poky-linux

./scripts/examples/imxlinux_example.sh examples/lighting-app/linux/
examples/lighting-app/linux/out/aarch64

Signed-off-by: Haoran Wang <elven.wang@nxp.com>

* Restyled by whitespace

* Restyled by shellharden

* Restyled by shfmt

* Add i.MX Github workflow

Add the build workflow to validate the compiling with i.MX SDK.

Signed-off-by: Haoran Wang <elven.wang@nxp.com>

* Add badge for i.MX Linux platform CI

Signed-off-by: Haoran Wang <elven.wang@nxp.com>

Co-authored-by: Restyled.io <commits@restyled.io>