tasks: use shebang

[jdx]

if a task in a config file starts with "#!" it will be saved to disk and executed as a file

note: this seems to not work correctly in linux so it's still a WIP

[codacy-production]

Coverage summary from Codacy

See diff coverage on Codacy

Coverage variation	Diff coverage
✅ +0.72%	✅ 90.00%

Coverage variation details

	Coverable lines	Covered lines	Coverage
Common ancestor commit (0e38477)	16237	13534	83.35%
Head commit (eb780f0)	16243 (+6)	13656 (+122)	84.07% (+0.72%)

Coverage variation is the difference between the coverage for the head and common ancestor commits of the pull request branch: <coverage of head commit> - <coverage of common ancestor commit>

Diff coverage details

	Coverable lines	Covered lines	Diff coverage
Pull request (#1566)	20	18	90.00%

Diff coverage is the percentage of lines that are covered by tests out of the coverable lines that the pull request added or modified: <covered lines added or modified>/<coverable lines added or modified> * 100%

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_{You may notice some variations in coverage metrics with the latest Coverage engine update. For more details, visit the documentation}