Reorganize crate source code

Signed-off-by: Nikolaos Karaolidis <nick@karaolidis.com>

Cargo.toml

@@ -5,11 +5,11 @@ edition = "2021"
 
 [lib]
 name = "qrust"
-path = "src/lib/mod.rs"
+path = "src/lib/qrust/mod.rs"
 
 [[bin]]
 name = "qrust"
-path = "src/main.rs"
+path = "src/bin/qrust/mod.rs"
 
 [profile.release]
 panic         = 'abort'

src/lib/qrust/utils/mod.rs

@@ -1,6 +1,6 @@
 pub mod backoff;
 pub mod de;
-pub mod macros;
+pub mod r#macro;
 pub mod ser;
 pub mod time;