Schema validate max resources

[ewels]

• Remove --name from the schema since we removed this core nextflow option from nextflow.config in parameter validation for dev branch #852 (throws a linting warning instead of fail, so wasn't caught by the CI)
• Added pattern regexes for validation of --max_memory and --max_time
  • Patterns are fairly strict - must now be in the format 123.GB or 456.h
  • Used the prefixes listed on the nextflow docs, neither now allowed without any prefix (e.g.789)
  • --max_cpus is already set as an int so fully validated already

PR checklist

• This comment contains a description of changes (with reason)
• CHANGELOG.md is updated
• If you've fixed a bug or added code that should be tested, add tests!
• Documentation in docs is updated

[drpatelh]

Wooohooooo!