Add maven script windows support

Add bat script to support sme openapi generation.
Add instruction in README to fix the git submodule update issue in windows.

Issue-ID: NONRTRIC-899
Signed-off-by: aravind.est <aravindhan.a@est.tech>
Change-Id: Id53fe50807bd5103f6a62495eb4b3527c7c9cdd5
4 files changed