ESP-IDF with ESP32-C6 Workshop - NVS part should contain custom NVS instead of system for storing custom data

[georgik]

The workshop is using system NVS partition to store data.

The recommended approach is to create a new NVS partition to store custom data and leave the system one for Wi-Fi and other subsystems.

Having separate partition have several benefits:

• isolation from system data
• better wear leveling
• reduced of risk of running out of storage if system writes something into the partition

Suggestion: Explicitly mention an approach to create new nvs partition, so that it's not shared with system.