Add lint and format commands

[bentsherman]

To test:

$ ./launch.sh lint .
$ ./launch.sh format .

TODO:

• Update docs
• Prettify console logging

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[bentsherman]

@tom-seqera adding you as an optional reviewer to help you get familiar with the code

[pditommaso]

Made a quick test

./main.nf at line 20, column 1: Invalid include source: 'file:///Users/pditommaso/Projects/rnaseq-nf/modules/rnaseq.nf'
./main.nf at line 21, column 1: Invalid include source: 'file:///Users/pditommaso/Projects/rnaseq-nf/modules/multiqc/main.nf'
./main.nf at line 37, column 3: `RNASEQ` is not defined
./main.nf at line 38, column 3: `MULTIQC` is not defined
./main.nf at line 38, column 12: `RNASEQ` is not defined

./modules/rnaseq.nf at line 3, column 1: Invalid include source: 'file:///Users/pditommaso/Projects/rnaseq-nf/modules/index/main.nf'
./modules/rnaseq.nf at line 4, column 1: Invalid include source: 'file:///Users/pditommaso/Projects/rnaseq-nf/modules/quant/main.nf'
./modules/rnaseq.nf at line 5, column 1: Invalid include source: 'file:///Users/pditommaso/Projects/rnaseq-nf/modules/fastqc/main.nf'
./modules/rnaseq.nf at line 13, column 5: `INDEX` is not defined
./modules/rnaseq.nf at line 14, column 5: `FASTQC` is not defined
./modules/rnaseq.nf at line 15, column 5: `QUANT` is not defined
./modules/rnaseq.nf at line 15, column 11: `INDEX` is not defined
./modules/rnaseq.nf at line 18, column 6: `QUANT` is not defined
./modules/rnaseq.nf at line 18, column 22: `FASTQC` is not defined

./nextflow.config at line 130, column 24: `AZURE_BATCH_ACCOUNT_NAME` is not defined
./nextflow.config at line 131, column 23: `AZURE_BATCH_ACCOUNT_KEY` is not defined
./nextflow.config at line 137, column 24: `AZURE_STORAGE_ACCOUNT_NAME` is not defined
./nextflow.config at line 138, column 23: `AZURE_STORAGE_ACCOUNT_KEY` is not defined

• It would be nice to use relative paths e.g. modules/rnaseq.nf instead `file:///Users/pditommaso/Projects/rnaseq-nf/modules/rnaseq.nf
• alternatively, at least strip the file:// prefix.
• not sure to understand why line 20 and 21 were reported as invalid includes

[pditommaso]

it would be nice to add some unit tests