espressif: add user-specified socket connect() timeout

[dhalbert]

• Fixes TCP Connection Timeout Setting #8266.

In espressif, adds user-specified socket connect() timeout by doing connect() on the non-blocking socket, and then polling with select() for success.

RP2040 CYW43 already has similar code (though it doesn't check for ctrl-C or do background tasks)

Tested with adafruit_requests. IMPORTANT: adafruit_requests tries to connect twice, which can make the timeout appear to be twice as long. This is an issue with adafruit_requests, not with this fix. I will bring this up as an issue in that library.

Tagging @SanJoseBart and @bitmitt who were in the #8266 discussion.

[dhalbert]

The mixgo_ce_udisk build failure is a space issue, and will be fixed by #9207, so that failure can be ignored here.

[SanJoseBart]

Thank you @dhalbert! This will be a very useful improvement!

[justmobilize]

@dhalbert using the test code you posted in the requests issue:

On: Adafruit CircuitPython 9.1.0-beta.1-12-g2060b2b390 on 2024-04-26; Adafruit Feather ESP32-S3 TFT with ESP32S3:

default success: 0.632004
default fail: 36.632
error: Error connecting socket: [Errno 119] EINPROGRESS
timeout success: 0.641022
timeout fail: 6.16202
error: Error connecting socket: [Errno 116] ETIMEDOUT

On: Adafruit CircuitPython 9.1.0-beta.1-12-g2060b2b390 on 2024-04-26; Adafruit Feather ESP32-S2 TFT with ESP32S2:

default success: 0.694092
default fail: 0.00390625
error:
timeout success: 0.704956
timeout fail: 0.00402832

So something seems not quite right...

[tannewt]

Thank you!

[tannewt]

One board is too big.