What this PR does / why we need it:
this PR use to compatibility with postgresql jdbc.
Which issue this PR fixes (optional, in fixes #<issue number>(, fixes #<issue_number>, ...) format, will close that issue when PR gets merged): fixes
#I3EEEM:包名更换为"org.opengauss.Driver"

Special notes for your reviewer:
I have add change opengauss-jdbc*.jar build, it's not same with postgresql.jar anymore. for opengauss-jdbc*.jar have this change:

1. change jdbc driver prefix from jdbc:postgresql:// to jdbc:opengauss://.
2. change driver class from org.postgresql.Driver to org.opengauss.Driver

for windows git shell build:

1. add a script prepare_windows_build.sh to build opengauss-jdbc*.jar if all dependency prepared.
2. add a one-click build script: build_on_windows_git.sh. you can use sh build_on_windows_git.sh to build.
   Release note: