feat: upgrade platform and support webdav (#1047)

## Summary
- Upgrade platform from espressif32 6.12.0 (Arduino Core 2.0.17) to
pioarduino 55.03.37 (Arduino Core 3.3.7, ESP-IDF 5.5.2)
- Add WebDAV Class 1 server (RFC 4918) - SD card can be mounted as a
network drive
- I also slightly fixed the SDK and also made a [pull request
](https://github.com/open-x4-epaper/community-sdk/pull/21)

First PR #1030 (was closed because the implementation was based on an
old version of the libraries)
Issue #439

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Co-authored-by: Dave Allie <dave@daveallie.com>

platformio.ini

@@ -6,7 +6,7 @@ extra_configs = platformio.local.ini
 version = 1.0.0
 
 [base]
-platform = espressif32 @ 6.12.0
+platform = https://github.com/pioarduino/platform-espressif32/releases/download/55.03.37/platform-espressif32.zip
 board = esp32-c3-devkitm-1
 framework = arduino
 monitor_speed = 115200