Parallelize Cases (#109)

* Parallelize over cases

* Rename the state and driver

* Parallelize execution

* Update the default config of the tool

* Make codebase async

* Fix machete

* Fix tests & clear node directories before startup

* Cleanup the cleanup logic

* Rename geth node

crates/common/src/fs/clear_dir.rs

@@ -0,0 +1,22 @@
+use std::{
+    fs::{read_dir, remove_dir_all, remove_file},
+    path::Path,
+};
+
+use anyhow::Result;
+
+/// This method clears the passed directory of all of the files and directories contained within
+/// without deleting the directory.
+pub fn clear_directory(path: impl AsRef<Path>) -> Result<()> {
+    for entry in read_dir(path.as_ref())? {
+        let entry = entry?;
+        let entry_path = entry.path();
+
+        if entry_path.is_file() {
+            remove_file(entry_path)?
+        } else {
+            remove_dir_all(entry_path)?
+        }
+    }
+    Ok(())
+}

crates/common/src/fs/mod.rs

@@ -0,0 +1,3 @@
+mod clear_dir;
+
+pub use clear_dir::*;