Add static build and CI

[lss233]

This PR provides following features:

• statically linked build to Makefile.
• Github Action workflow to upload build results on multiple arch when publish a new release.

You can build statically linked executables by using make static and make vpp-statc.

Following arch are supported in workflow:		no-vpp version, dynamic	no-vpp version, static	vpp version, dynamic	vpp version, static
x86_64	✔️	✔️	✔️	⛔
mipsle	✔️	✔️	⛔	⛔
aarch64	✔️	✔️	✔️	⛔
armv7	✔️	✔️	⛔	⛔

Known issues

• ~make vpp-static will fail in the workflow.~ (Deleted)