Adding nanopb to gitignore, sorting files before generation

.gitignore

@@ -12,3 +12,7 @@ Cargo.lock
 
 # MSVC Windows builds of rustc generate these, which store debugging information
 *.pdb
+
+# Nanopb protobufs aren't necessary for the project
+# its name _.rs because there's no package name in the source file
+src/generated/_.rs

build.rs

@@ -41,6 +41,8 @@ fn generate_protobufs() -> std::io::Result<()> {
         protos.push(path.to_owned());
     }
 
+    protos.sort_by(|a, b| a.cmp(b));
+
     let mut config = prost_build::Config::new();
 
     let mut derive_string = String::from("#[derive(");