add support for WeAct "F411 8M HSE" variant and rename existing menu …

[lehjr]

…entry to avoid confusion

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Summary

This PR fixes/implements the following bugs/features
Adds support for WeAct F411 8M HSE variant as menu entry BlackPill F411CE (HSE 8Mhz). Original menu entry BlackPill F411CE renamed to BlackPill F411CE (HSE 25Mhz) to avoid confusion. F411 25M HSE 8M Flash was not added at this time, because the board is functionally equal to the existing supported device, just with the addition of the flash chip connected to SPI pins on PA4, PA5, PA6, and PA7.

Explain the motivation for making this change. What existing problem does the pull request solve?
Fixes device not working properly due to incompatible clock settings.

Validation

• Ensure CI build is passed.
• Demonstrate the code is solid. [e.g. Provide a sketch]

#include <Arduino.h>

#define LED_PIN PC13

void setup() {
  pinMode(LED_PIN, OUTPUT);
  Serial.begin(115200);
  
  while (!Serial) {
    digitalWrite(LED_PIN, !digitalRead(LED_PIN));
    delay(50);
  }  
}

void loop() {
  Serial.println("USB CDC Working!");
}

Code formatting

• Ensure AStyle check is passed thanks CI

Closing issues

Fixes #3030

[fpistm]

Thanks @lehjr for this PR.
LGTM