intermediate: support colon seperated tool paths

[rhubert]

Make it possible to define tools with more than one directory containing executables by handling colons in path as separator.

[codecov[bot]]

Codecov Report

All modified and coverable lines are covered by tests :white_check_mark:

Comparison is base (8f7a9eb) 88.31% compared to head (2b3ce92) 88.31%.

Additional details and impacted files

```diff @@ Coverage Diff @@ ## master #541 +/- ## ======================================= Coverage 88.31% 88.31% ======================================= Files 46 46 Lines 14509 14509 ======================================= Hits 12814 12814 Misses 1695 1695 ```

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[rhubert]

I think this basically works.

The issue I faced was a package with multiple tools installed in different directories. Symlinking them was not possible as these tools tried to open files relative to the symlink...

Anyway I found another solution to solve my problem. Not sure if this is needed. What do you think?

[jkloetzke]

How about to just declare multiple tools? Something like this:

provideTools:
    foo: path/a
    bar: path/b

Then a consuming recipe can choose if it needs foo, bar or both. If there are multiple tools then they should have their own name. I would even introduce different names if multiple tools are in exactly the same directory. This makes refactoring in the future much easier.

I don't think that the proposed solution is viable. The original design is to have one path per tool name. Attaching an incrementing suffix looks kind of arbitrary. What should happen if this creates a name collision? The numbering will change too if some additional path is added in the middle. So all in all I would rather not go this route.