Gradle build script generation for all needed targets

[alexanderst]

Implement build script generation for all targets addressed by current maven structure.

[AlexDBlack]

For exe: assertTrue(expFile.exists()); is failing for me. The .exe is definitely created under gradle/build/launch4j; problem is the copyExe task:

Task :createExe
Task :copyExe NO-SOURCE

Maybe windows specific path issues?

rpm, deb, tar, exe and docker are all packing a near-empty JAR not an uber-jar.
We need them to package the uber-jar for any of them to be useful. I've added a size check so the tests now fail

Otherwise: tested and looks pretty good

[alexanderst]

rpm, deb, tar, exe and docker are all packing a near-empty JAR not an uber-jar.
We need them to package the uber-jar for any of them to be useful. I've added a size check so the tests now fail

UberJarDeployment is a standalone type. So should we build uberjar implicitly for RpmDeployment?

[sonarcloud]

Kudos, SonarCloud Quality Gate passed!

6 Bugs
0 Vulnerabilities (and 0 Security Hotspots to review)
20 Code Smells

0.0% Coverage
20.5% Duplication

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