Add String Conversion Function

Source/Converter.rs

@@ -0,0 +1,14 @@
+use libc::c_char;
+use std::ffi::{CStr, CString};
+
+/// Convert C string to Rust String.
+pub fn ToString(ptr: *mut c_char) -> String {
+    let input = unsafe { CStr::from_ptr(ptr) };
+
+    return input.to_str().unwrap().to_string();
+}
+
+/// Convert Rust String to C string.
+pub fn FromString(string: String) -> *mut c_char {
+    return CString::new(string).unwrap().into_raw();
+}