* libs: removed cxxheaderparser submodule, expecting one from toolchain
* toolchain: v38
* vscode: now using clangd from toolchain
* vscode: clangd path in config is now generated by fbt
* vscode, fbt: improved clangd path generation
* fbt: fixed LANG_SERVER handling; switched to clangd as default
* vscode: removed deprecated options from config
* ufbt: project template: updated clang-format, added clangd config
* ufbt: now using clangd as default language server
* ufbt: now using clangd as default language server
* desktop, about: replaced commit# with API version
* scripts: storage: added approx speed for file uploads
* scripts: selfupdate: use folder name by default
* vscode: fixed broken get_blackmagic shell integration on *nix
Co-authored-by: あく <alleteam@gmail.com>