Enhancement request: add functionality to show where symbols are found

[Firehed]

When running this, it caught some dead imports that my other static analysis tools missed. This is great, but it was quite difficult to track down the source of the error, since some of the class names had a lot of similar matches, and partially-qualified imports (use A\B; new B\C();: A\B\C not found type of stuff) make grepping through the code a bit more complex.

A command to reveal where the missing dependency is present would help a lot; e.g. composer-require-checker find-usage My\Missing\Class

[filips123]

This could be done with additional command argument or config file option which would cause files where unknown symbol is found to appear on output:

The following unknown symbols were found:
+-----------------------------------+--------------------+-----------------------+
| unknown symbol                    | guessed dependency | location              |
+-----------------------------------+--------------------+-----------------------+
| MyUnknownSymbol                   |                    | src/Example/Class.php |
+-----------------------------------+--------------------+-----------------------+