Helidon v2.1.0

[aberinnj]

• Dependencies still using JDBC v19 and other packages that may be uneccessary, Updated
• No NPE guards for missing environment variables, Updated
• Environment variables not homogenous, and undocumented, Updated
• Add README for running instructions, Updated
• Improve code to be more flexible, Updated

[aberinnj]

@Kuassim Please review when possible and merge

[Kuassim]

1. One Java code does not have Copyright (unless I am not seeing right).
2. Make sure to use 2 tabs for indentation at each level (it looks like you are using 3 and sometimes more than 3.
3. Use try-with-resource for code blocks with statements and resultSets; to make sure these are closed/freed.

[aberinnj]

@Kuassim

1. fixed
2. fixed I hope! Some code are using builder methods so they may be indented more
3. I do not see any files having this signature

[aberinnj]

@jeandelavarene Please review and merge when possible