Update esp32 example for non esp32c3 targets

[bytedream]

This PR changes several things in the the esp32 example:

• Set espflash flash --monitor to be the runner for all esp related targets
• Add targets as comments for different chips in config file
• Add esp32 feature for normal ESP32 chip
• Add cargo alias to run example on every supported esp32 chip
• Decrease embassy-executor task arena size to task-arena-size-32768, any higher value will cause an compile error on ESP32
• Remove esp32s2 feature, this chip doesn't support Bluetooth at all
• Remove hardcoded esp32c3 feature in esp-backtrace dependency

[jamessizeland]

might be worth adding some alias lines in .cargo/config.toml, we tend to do this for multi-chip projects, i.e.

[alias]
esp32c3 = "run --release --features=esp32c3 --target=riscv32imc-unknown-none-elf"
esp32c6 = "run --release --no-default-features --features=esp32c6 --target=riscv32imac-unknown-none-elf"

[bytedream]

Thanks for the suggestions I'll add it. I didn't knew that an cargo alias could be specified in the config, that's neat

[lulf]

Excellent, thanks!

[lulf]

/test