Allow scala like message definitions

[reid-spencer]

Allow messages to be defined like this:

command Foo(value: String, field: Number)

instead of this:

command Foo { value: String, field: Number }

[sonarcloud[bot]]

Quality Gate passed

Issues
0 New issues
0 Accepted issues

Measures
0 Security Hotspots
No data about Coverage
0.0% Duplication on New Code

See analysis details on SonarCloud

[github-actions[bot]]

Pull Request Test Coverage Report for Build 8676367663

Details

• 1 of 1 (100.0%) changed or added relevant line in 1 file are covered.
• 2 unchanged lines in 1 file lost coverage.
• Overall coverage decreased (-0.03%) to 65.571%

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Files with Coverage Reduction	New Missed Lines	%
passes/src/main/scala/com/ossuminc/riddl/passes/validate/DefinitionValidation.scala	2	62.6%
<!--	Total:	2		-->

Totals
Change from base Build 8676365291:	-0.03%
Covered Lines:	3870
Relevant Lines:	5902

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