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

---------

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

src/network/HttpDownloader.h

@@ -6,7 +6,7 @@
 
 /**
  * HTTP client utility for fetching content and downloading files.
- * Wraps WiFiClientSecure and HTTPClient for HTTPS requests.
+ * Wraps NetworkClientSecure and HTTPClient for HTTPS requests.
  */
 class HttpDownloader {
  public: