add a binary for shenlong that will expose some of shenlong's functionality.

Currently it can detect the current project, run a command from the current project's root, and print the absolute path of the project.

Cargo.lock

@@ -290,6 +290,10 @@ name = "scopeguard"
 version = "0.3.3"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 
+[[package]]
+name = "scouter"
+version = "0.0.1"
+
 [[package]]
 name = "shenlong"
 version = "0.0.1"
@@ -297,6 +301,7 @@ dependencies = [
  "c_str_macro 1.0.2 (registry+https://github.com/rust-lang/crates.io-index)",
  "env_logger 0.6.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "log 0.4.6 (registry+https://github.com/rust-lang/crates.io-index)",
+ "scouter 0.0.1",
  "shenlong-sys 0.0.1",
 ]