Desktop set cef data and cache directory (#2927)

desktop/src/cef/dirs.rs

@@ -0,0 +1,17 @@
+use std::path::PathBuf;
+
+use crate::dirs::{ensure_dir_exists, graphite_data_dir};
+
+static CEF_DIR_NAME: &str = "browser";
+
+pub(crate) fn cef_data_dir() -> PathBuf {
+	let path = graphite_data_dir().join(CEF_DIR_NAME);
+	ensure_dir_exists(&path);
+	path
+}
+
+pub(crate) fn cef_cache_dir() -> PathBuf {
+	let path = cef_data_dir().join("cache");
+	ensure_dir_exists(&path);
+	path
+}