PETSIRD basic C++ example

This directory contains some C++ example code to read/write PETSIRD data. You need to yardl generate in the model directory first.

The C++ code shows writing to and reading from an HDF5 file

Compile the code:
```
cd /whereever/cpp
mkdir -p build && cd build`
cmake -G Ninja -S .. -DHDF5_ROOT=$CONDA_PREFIX
ninja`
```
If you did not use conda to install HDF5, do not add the -DHDF5_ROOT=$CONDA_PREFIX part of the cmake line.
Run the generator: ./prd_generator test.h5
Run the analyzer: ./prd_analysis test.h5
You can inspect the HDF5 file by running h5dump test.h5