Realize web server for static data (html, js, css, etc.)

[andyoknen]

Frontend place here: https://github.com/pocketnetteam/pocketnet.gui

I suggest that with each release of the frontend, we collect an archive with a ready-made application for the node.

• [X] 1. Implement a web server mechanism for accessing static resources. Automatic detection of the file content type.
• [x] 2. Implement an in-memory caching mechanism.
• [ ] 3. The node must be able to update the archive from GUI releases
• [ ] 4. Provide access via https

[andyoknen]

Alternatively, you can use a third-party library for step 3 - https://github.com/tfussell/miniz-cpp

The archive will be available in the releases section at the link: https://github.com/pocketnetteam/pocketnet.gui/releases/latest/download/PocketnetNodeGui.zip

Standard path for unpacking (GetDataDir() / "web")

where GetDataDir() from util.h