Fix #1450: CI builds with Maven Wrapper to ensure that Maven Wrapper files and configuration are correct

[rohanKanojia]

Fix #1450

• Add Linux and Windows Github workflows for maven wrapper builds
• Updated maven wrapper files as per maven 3.6.3

[rohanKanojia]

@mabrarov: Could you please review?

[mabrarov]

Please check c25e4cc where I made similar changes for Maven Wrapper and additionally added .gitattributes to ensure correct line ending for this file independent of Git configuration:

* text=auto
...
*.cmd text eol=crlf
mvnw text eol=lf

[rohanKanojia]

I've merged #1405 . I think it's okay to revert my changes regarding maven wrapper files in order to avoid conflicts

[mabrarov]

Do we need ./ on Windows

Suggested change

	run: ./mvnw.cmd clean install
	run: mvnw.cmd clean install

?

[rohanKanojia]

I tried this but workflow fails when I don't add ./:

Run mvnw.cmd clean install
mvnw.cmd: D:\a\_temp\d8391a79-e7aa-498f-8996-6e39eb828a92.ps1:2
Line |
   2 |  mvnw.cmd clean install
     |  ~~~~~~~~
     | The term 'mvnw.cmd' is not recognized as a name of a cmdlet, function, script file, or executable
     | program. Check the spelling of the name, or if a path was included, verify that the path is correct
     | and try again.

[mabrarov]

I got it. It's because the call of mvnw.cmd is performed from PowerShell script. My PowerShell suggests me to use .\mvnw.cmd, but I'm OK with ./mvnw.cmd.