fix(directives): allow multiline and leading spaces

[carlocorradini]

Fix #1423

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 95.50%. Comparing base (be33fd4) to head (0b61720).
Report is 18 commits behind head on master.

Additional details and impacted files

@@           Coverage Diff           @@
##           master    #1669   +/-   ##
=======================================
  Coverage   95.50%   95.50%           
=======================================
  Files         113      113           
  Lines        1847     1847           
  Branches      364      362    -2     
=======================================
  Hits         1764     1764           
  Misses         83       83           

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[carlocorradini]

Now it's allowed to do this:

@Directive(`
  @name(
    argument: "value",
    hello: "world
  )
`)

Since the directive is firstly inlined and trimmed (start)

[carlocorradini]

@MichalLytek Can be seen as a feature?

[carlocorradini]

@MichalLytek I'm missing something in the test directive definition since the test should pass but the error does not refere to the correct test. I really don't know what I'm missing 😭