Enable ensemble creation and execution through a new yaml config file

[lrntct]

• Create a new input format using yaml. multiple documents are possible in a single file.
• If a list is used instead of a scalar for an input in the config file, then the ensemble is expanded into multiple simulation using a cartesian product
• The user could set --dry-run, which will validate the configuration, check the inputs, and make sure no output overlwrite inputs.
• The execution records a manifest.yaml
• The run is no longer setting up a temporal MASK file, but rather setting up the mask manually with numpy. This ensure no inconsistent state is left behind if a simulation crashes. It is a temporary solution before GRASS 8.5 is adopted (Require GRASS 8.5 #289).
• A new CSV writer is implemented that prevent overwrite of existing file, and automatically creates a subdir if necessary. It might be adopted upstream later.
• The GRASS output provider now use direct creation arguments.
• ConfigReader is simplified
• Resolves GrassRasterInputProvider and GrassRasterOutputProvider should validate the map keys they receive #284
• Re-organize the code base
• An ensemble is limited to 100 members, and a batch to 200
• Hotstart is not supported yet

WIP:

• Full yaml documentation, including templates