operations: innersource: npm-groovy-lint: Only parse groovy files

[johnandersen777]

• TODO
  • Modify CodeNarc exec to have add -includes=\"{}/.{}/.groovy" as argument following line 56
    • https://codenarc.org/codenarc-command-line.html

dffml/operations/innersource/dffml_operations_innersource/npm_groovy_lint.py

Lines 44 to 57 in cad083a

	[
	java_binary,
	"-Xms256m",
	"-Xmx2048m",
	"-cp",
	(
	str(java_lib_path.joinpath("CodeNarcServer.jar").resolve())
	+ ":"
	+ str(java_lib_path.joinpath("*").resolve())
	),
	"com.nvuillam.CodeNarcServer",
	"--server",
	],