remove treehouse-format crate and collapse everything into src

tests/it/vfs/physical.rs

@@ -0,0 +1,22 @@
+use std::path::Path;
+
+use treehouse::vfs::{entries, query, Content, PhysicalDir, VPath, VPathBuf};
+
+fn vfs() -> PhysicalDir {
+    let root = Path::new("tests/it/vfs_physical").to_path_buf();
+    PhysicalDir::new(root)
+}
+
+#[test]
+fn dir() {
+    let vfs = vfs();
+    let dir = entries(&vfs, VPath::ROOT);
+    assert_eq!(&dir[..], &[VPathBuf::new("test.txt")]);
+}
+
+#[test]
+fn content() {
+    let vfs = vfs();
+    let content = query::<Content>(&vfs, VPath::new("test.txt")).map(Content::bytes);
+    assert_eq!(content.as_deref(), Some(b"hewwo :3\n".as_slice()));
+}