tools: increase lint coverage
Checklist
-
make -j4 test
(UNIX), orvcbuild test nosign
(Windows) passes -
commit message follows commit guidelines
Affected core subsystem(s)
tools
Description of change
Extend linting to tools/license2rtf.js and any other JS that gets added
to the tools
directory by default.
This incidentally simplifies lint invocation and .eslintignore file.