Use -Xsharedclasses option to improve startup time (especially on zPDT / zD&T emulated environments)

[Joe-Winchester]

Is your feature request related to a problem? Please describe.
Zowe APIML startup can be improved on zPDT / zD&T emulator environments to be 1/2 using shared classes.

Describe the solution you'd like
More on shared classes can be found at the great blog by Colin at https://colinpaice.blog/2023/08/26/turbo-start-your-java-program-on-z-os-and-save-a-bucket-of-cpu/.
It's a -Xshareclasses:cacheDir=/tmp,name=rseapi’,restoreFromSnapshot’, cacheDirPerm=0777,groupAccess option and could be added to the start.sh scripts in each of the components.

Willingness to help
Very happy to help create a PR for this as well as do any testing, and I expect Colin (who has a zPDT and did the analysis on the improvements) would help test also.