Make and CI/CD build updates

[mphalke]

1. projects: Updated CI groovy files to remove clone-repos.mk dependency

   • Updated CI groovy files for all projects to remove dependency on the clone repo makefile
   • Removed clone-repos.mk file

2. projects: Updated makefiles to remove dependency on clone-repos.mk

   • Updated all projects 'makefile' to remove dependency in make file that clones all the repos
   • Added all generic variables/dependencies under tools/scripts folder

3. libraries: Added submodules

   • Added submodules for all library dependencies

4. libraries: Updated precision converters library .lib file

   • Using the latest commit hash for precision converters library repo

[mphalke]

V1.0: Corrected device name in ad4696 CI groovy script