doc(wiki)[tools]: config provider

docs/tools/Config_provider.md

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-TODO
+# Config provied
+## Executable
+`discopop_config_provider`
+
+## Purpose
+The config provider acts a simple and globally accessible way to retrieve information regarding the local DiscoPoP installation.
+Values which can obtained via the config provider are for example the paths to the `discopop build directory`, the `discopop source directory`, or the `llvm binary directory`.
+
+
+## Output
+The requested values are simply returned in the form of a string if the python module is imported, or printed to `stdout` in case of a standalone invokation.
+
+## Note
+For a more detailed description of the available run-time arguments, please refer to the help string of the respective tool.
+```
+discopop_config_provider --help
+```