Ely Office: six offline-first desktop apps in Rust and GPUI

ElyDoc, ElyTable, ElyShow (LibreOfficeKit), ElyPDF (MuPDF), ElyTree (Git),
ElyMark (Milkdown and CodeMirror in CEF). ElyMail and ElyAgent follow.

.cargo/config.toml

@@ -0,0 +1,6 @@
+[target.'cfg(all(windows, target_env = "msvc"))']
+rustflags = ["-C", "target-feature=+crt-static"]
+
+[env]
+# cef-dll-sys builds against the CEF that scripts/fetch-cef.sh fetched.
+CEF_PATH = { value = "engines/cef", relative = true }