Update LipidXplorer Wiki, describe entry paths and application use cases

The discussion showed, that we need to be able to guide users to choose, whether they should choose the web-application, the standalone LipidXplorer, or PeakStrainer as a preprocessing / size reduction tool. Also, we should explain the options, e.g. Docker image, Standalone, etc.

Thus, the Wiki needs to contain a new page: choosing your path with LipidXplorer or something along those lines.