[protocol] add cargo-diet assertions

Author: Byron

etc/check-package-size.sh

@@ -20,6 +20,7 @@ indent cargo diet -n --package-size-limit 20KB
 (enter git-ref && indent cargo diet -n --package-size-limit 4KB)
 (enter git-object && indent cargo diet -n --package-size-limit 15KB)
 (enter git-odb && indent cargo diet -n --package-size-limit 50KB)
+(enter git-protocol && indent cargo diet -n --package-size-limit 10KB)
 (enter git-repository && indent cargo diet -n --package-size-limit 10KB)
 (enter git-transport && indent cargo diet -n --package-size-limit 4KB)
 (enter gitoxide-core && indent cargo diet -n --package-size-limit 10KB)

git-protocol/Cargo.toml

@@ -6,6 +6,7 @@ license = "MIT/Apache-2.0"
 description = "A WIP crate of the gitoxide project for implementing git protocols"
 authors = ["Sebastian Thiel <[email protected]>"]
 edition = "2018"
+include = ["src/**/*"]
 
 [lib]
 doctest = false