Refactor: Normalize module paths

[medikoo]

Simplify module paths from e.g. lib/plugins/invoke/invoke.js to lib/plugins/invoke.js

[codecov-io]

Codecov Report

Merging #8620 (008506f) into master (ca697f3) will not change coverage.
The diff coverage is 100.00%.

@@           Coverage Diff           @@
##           master    #8620   +/-   ##
=======================================
  Coverage   86.94%   86.94%           
=======================================
  Files         252      252           
  Lines        9517     9517           
=======================================
  Hits         8275     8275           
  Misses       1242     1242           

Impacted Files	Coverage Δ
...b/plugins/aws/package/compile/events/alexaSkill.js	96.42% <ø> (ø)
...ugins/aws/package/compile/events/alexaSmartHome.js	100.00% <ø> (ø)
...gins/aws/package/compile/events/cloudWatchEvent.js	97.67% <ø> (ø)
...lugins/aws/package/compile/events/cloudWatchLog.js	100.00% <ø> (ø)
lib/plugins/aws/package/compile/events/iot.js	100.00% <ø> (ø)
lib/plugins/aws/package/compile/events/schedule.js	97.95% <ø> (ø)
lib/plugins/aws/package/compile/events/sns.js	100.00% <ø> (ø)
lib/plugins/aws/package/compile/functions.js	94.27% <ø> (ø)
lib/plugins/index.js	100.00% <ø> (ø)
lib/plugins/info.js	100.00% <ø> (ø)
... and 31 more

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