Investigate impact of saved Wi-Fi networks on flash health #9
Description
Currently, we allow up to 5 saved Wi-Fi networks. The data structure containing this information is stored in the chip's flash and is loaded on startup (see #7).
Anytime there is a change to the saved networks (add/remove/modify), the entire data structure is written back to flash. We should investigate how much wear this causes and whether or not it will be a problem in practice. If yes, we should look at other ways of maintaining the information (e.g., allow fragmentation and store is_free flags separate from the main data structure to enable smaller writes).
Also the list order doesn't really matter, which may help simplify the eventual implementation.