make cargo espflash work by adding a partition.csv

[Vollbrecht]

For running the examples we are using cargo espflash. By default cargo espflash will be using the partition.bin created inside esp-idf-sys ( espflash by default will use its own. The problem is that the default esp-idf-sys partition has only a 1MB big AppPartition size. All sdkconfig options for using different sized partitions only lead to a max AppPartition to 1.5MB and this is still to less for an wifi example with debug infos. So the simplest / cleanest solution is to simply provide one with the configuration file-

[ivmarkov]

I think we need this for esp-idf-hal as well, no? And for esp-idf-sys?

[Vollbrecht]

I think we need this for esp-idf-hal as well, no? And for esp-idf-sys?

yeah already pushed

[ivmarkov]

Thanks!