Initial Pass at module-info.java for most modules

[rvesse]

This is work towards addressing #105, it creates hand crafted module-info.java for all the modules where that makes sense.

Things to be addressed:

• [x] Do JDK dependencies need to be explicitly declared as requires declarations e.g. java.base
• [x] How do we test that all the module definitions are valid?

[coveralls]

Pull Request Test Coverage Report for Build 573

• 0 of 0 changed or added relevant lines in 0 files are covered.
• No unchanged relevant lines lost coverage.
• Overall coverage remained the same at 71.73%

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Totals
Change from base Build 565:	0.0%
Covered Lines:	5922
Relevant Lines:	8256

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💛 - Coveralls

[rvesse]

Waiting on a new Apache Commons CSV release that has Automatic-Module-Name properly set

[rvesse]

With apache/commons-csv#191 fix I get past the module load error but run into a different JPMS related error:

Exception in thread "main" java.lang.IllegalArgumentException: Failed to locate resource /exit-codes.csv with any of the configured resource locators
    at com.github.rvesse.airline.help.external@2.9.0-SNAPSHOT/com.github.rvesse.airline.help.external.factories.ExternalHelpFactory.parseTabular(ExternalHelpFactory.java:230)
    at com.github.rvesse.airline.help.external@2.9.0-SNAPSHOT/com.github.rvesse.airline.help.external.factories.ExternalHelpFactory.createSection(ExternalHelpFactory.java:73)
    at com.github.rvesse.airline@2.9.0-SNAPSHOT/com.github.rvesse.airline.help.sections.factories.HelpSectionRegistry.getHelpSection(HelpSectionRegistry.java:97)
    at com.github.rvesse.airline@2.9.0-SNAPSHOT/com.github.rvesse.airline.model.MetadataLoader.loadHelpSections(MetadataLoader.java:508)
    at com.github.rvesse.airline@2.9.0-SNAPSHOT/com.github.rvesse.airline.model.MetadataLoader.loadCommand(MetadataLoader.java:470)
    at com.github.rvesse.airline@2.9.0-SNAPSHOT/com.github.rvesse.airline.model.MetadataLoader.loadCommand(MetadataLoader.java:435)
    at com.github.rvesse.airline@2.9.0-SNAPSHOT/com.github.rvesse.airline.SingleCommand.<init>(SingleCommand.java:80)
    at com.github.rvesse.airline@2.9.0-SNAPSHOT/com.github.rvesse.airline.SingleCommand.singleCommand(SingleCommand.java:49)
    at com.github.rvesse.airline.examples@2.9.0-SNAPSHOT/com.github.rvesse.airline.examples.ExampleExecutor.executeSingleCommand(ExampleExecutor.java:44)
    at com.github.rvesse.airline.examples@2.9.0-SNAPSHOT/com.github.rvesse.airline.examples.userguide.help.sections.ExternalHelp.main(ExternalHelp.java:58)

This is because with a JPMS application we can't use generic resource like /foo.txt and load it directly. Should look at building a ResourceLocator that leverages JRT URIs per JEP 220 to resolve this:

• [ ] Support loading class path resources in JPMS apps via JRT URIs (or similar)
• [ ] Document resource loading as a potential JPMS pitfall