T18 config

[niden]

Hello!

• Type: new feature
• Link to issue: [NFR]: Name the missing directory when config inference fails #18

In raising this pull request, I confirm the following:

• I have checked that another pull request for this purpose does not exist
• I wrote some tests for this PR
• composer test, composer cs and composer analyze all pass
• I have created a PR for the documentation about this change, if user facing

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• With no crest.php, the error for a composer.json whose psr-4 directories do not exist now names those directories: no crest.php and no usable psr-4 autoload entry found; these psr-4 directories do not exist: 'src'. Before, the message did not say that a missing directory was the cause.

Thanks

[github-actions]

Code Metrics Report

	master (17d3e85)	#24 (34d0ad0)	+/-
Coverage	99.0%	99.0%	+0.0%
Test Execution Time	1s	1s	0s

Details

  |                     | master (17d3e85) | #24 (34d0ad0) |  +/-  |
  |---------------------|------------------|---------------|-------|
+ | Coverage            |            99.0% |         99.0% | +0.0% |
  |   Files             |               49 |            49 |     0 |
  |   Lines             |             1116 |          1126 |   +10 |
+ |   Covered           |             1105 |          1115 |   +10 |
  | Test Execution Time |               1s |            1s |    0s |

Code coverage of files in pull request scope (100.0% → 100.0%, patch 100.0%)

Files	Coverage	+/-	Patch Coverage	Status
src/Project/Config.php	100.0%	0.0%	100.0%	modified

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Reported by octocov