Features/#355 module use support

[dakochik]

'module' and 'use' sections highlighting is done

Resolved: #355

[iromeo]

In general is good, some case not supported and tests missing. Better to split such huge features (parsing, completion, resolve, inspections) in subtasks and do them sequentially or at least in different commits. One commit should deliver a single idea, not many complex features at once otheriwise it is hard to do code review, check tests coverage, etc.

[dakochik]

fixed:

• parsing logic in commit 479c04a, which affects errors messages, acceptable redeclared rule names, separate tokens for snakemake 'as', 'with' and 'from keywords', references and arguments section parsing. Also this commit adds tests, that check parsing errors.
• commit 8b62434 affects code completion in declaration of use section and adds tests, that checks completion and annotator highlighting.

Answers to some questions:

1. What if use rule * from rule_355_module as rule_foo ? Is it runtime error?

I've checked and found, that snakemake would use as rule_foo only the last rule in imported module rule_355_module

2. is text_*_text_*_text also allowed on runtime?

Yes :/
Commit 479c04a adds support for such names

[iromeo]

• Not all use syntax support. Maybe is good to look through python impl of use/module parsing in snakemake sources if documentation doesn't cover all cases.
• Also let's make syntax errors look like snakemake runtime error messages for user convenience (although some of our messages IMHO are better, so let's took best from snakemake runtime errors and our impl).
• List of forbidden sections for use seems to be different. Here better is to check snakemake python impl details. E.g. 'benchmark' also is not allowe in use, not only execution sections. Also wrong section name result in weird runtime parsing error, so likely list of supported sections is harcoded in snakemake parser class

[dakochik]

fixed:

• Support for use section declaration with list of imported names see 0c79a6f
• Support for use section with single-line declaration see 0c79a6f
• Error messageas are changed and new messages are added see 0c79a6f
• Now parser tries to parse use section arguments sections even if there no with: see 0c79a6f
• Parser error highlighting tests are changed from .feature to .smk see 0c79a6f
• with completion for (see 5f6371c):

use rule rule from other_355_workflow : 
    input: "rule_355.input"

• Highlighting as, from, with by smk annotator see 0c79a6f
• Code refactoring in SmkRuleOrCheckpointNameReference see 0c79a6f

[iromeo]

Almost done =)

[dakochik]

fixed: errors messsages, parsing tests
refatored: parser code