[FEAT] Integrate contour lines (elevation) into generated maps with argument `-con`

[treee111]

This PR…

• closes #145
• makes relevant changes to be able to integrate contour lines (elevantion) into the generated maps
  • python coding
  • quickstart documenation
  • usage documentation
  • tag-wahoo-poi.xml to have contour lines included in the generated maps
  • anaconda env .yml files to have the relevant tools included

Considerations and implementations

• Most of the initial solution been described here: https://github.com/treee111/wahooMapsCreator/issues/145#issuecomment-1435660409
• A important thing is that python 3.10 is needed because matplotlib-3.4.3 is needed, later versions which work with python 3.11 do not work a la "_contour" has not been found

How to test

1. setup a Anaconda environment with python 3.10 if you don't have one already https://github.com/treee111/wahooMapsCreator/blob/contour-lines/docs/QUICKSTART_ANACONDA.md#create-anaconda-environment make sure that shapely is installed via conda-forge as written in this link!

2. install additional programs https://github.com/treee111/wahooMapsCreator/blob/contour-lines/docs/QUICKSTART_ANACONDA.md#additional-programs-for-generating-contour-lines

3. use branch contour-lines or alpha version installed via pip install wahoomc==4.0.0a3 pip install wahoomc==4.0.0a5 pip install wahoomc==4.0.0a10 or pip install wahoomc==4.0.0a8

4. run python -m wahoomc cli -co malta -con or similar for your country / xy-coordinates

Pull Request Checklist

• [x] Reviewed the Contributing Guidelines
  • Especially the Pull-Requests section
• [x] Commits (and commit-messages) are understandable
• [x] Tested with macOS / Linux
• [x] Tested with Windows