Support for hardware qualifiers (Flash + PSRAM) in manifests

[daggerrz]

Allow for more fine grained targeting to sepcific hardware. The ESP32-S3 modules, for example, comes with several configurations of flash and PSRAM and this PR makes it possible to target them individually.

Summary

• Add flashSizeMB and psramSizeMB optional qualifiers to manifest builds, enabling firmware targeting by hardware variant within the same chip family
• Detect flash size and PSRAM on connect and select the most specific matching build (most-qualifiers-wins, with fallback to unqualified builds)
• Add component that reads and displays chip, flash, PSRAM, crystal frequency, and MAC address without flashing
• Validate and strip invalid qualifier values at manifest load time
• Document hardware qualifiers and diagnostics button in README and website

Manifest example

  {
    "name": "My Firmware",
    "version": "1.0.0",
    "builds": [
      {
        "chipFamily": "ESP32-S3",
        "flashSizeMB": 16,
        "psramSizeMB": 8,
        "parts": [{ "path": "s3-16mb-8psram.bin", "offset": 0 }]
      },
      {
        "chipFamily": "ESP32-S3",
        "flashSizeMB": 4,
        "parts": [{ "path": "s3-4mb.bin", "offset": 0 }]
      },
      {
        "chipFamily": "ESP32-S3",
        "parts": [{ "path": "s3-generic.bin", "offset": 0 }]
      }
    ]
  }

A device with an ESP32-S3, 16 MB flash, and 8 MB PSRAM gets the first build. A 4 MB device gets the second. Any other ESP32-S3 falls back to the third.

[Jason2866]

The approach can not work. The gathered infos are incomplete. There is no Info about PSRAM Type QIO / OPI furthermore when PSRAM is not embedded it will not announced at all. There is simply no info about stored anywhere.
The only really working and correct info is the flash size.

[netmindz]

Which hardware did you test against @daggerrz ?

[daggerrz]

It definitely works for detecting the difference between ESP32-S3 modules with and without embedded PSRAM, which is one of the common modules that are hard for users of WLED to choose between. I have also tested half a dozen other board with Espressif modules that were detected correctly. I can put together a complete matrix of the hardware tested, if desired.