Fixes #6075 by preventing that class of potential errors from interface strings

Detailed return types for `str_pad()` and `str_repeat()`

Portable bin/test-with-real-projects.sh

Fixes vimeo/psalm#6049

This replaces hardcoded paths to Psalm with dynamically built ones and
thus allows to run `bin/test-with-real-projects.sh` locally.

Fix usage of gettype in a switch with closed resource

# Conflicts:
#	tests/UnusedVariableTest.php

Update `join` signature to match `implode`

Fixes vimeo/psalm#6080

* Fix #6066 - add better system for capturing template constraints

* Fix comment

Allow to use string key for preg_replace_callback callable argument

Merge pull request #6068 from caugner/make-ClassLikeNodeScanner-resilient-against-missing-class-storage

Make ClassLikeNodeScanner resilient against missing class storage

Add ReflectionProperty::getType() and hasType()

I had this flipped by mistake

Switch PSL test to Psalm's fork

Co-authored-by: Bruce Weirdan <weirdan@gmail.com>