add missing information to Cargo file

Cargo.toml

@@ -3,7 +3,14 @@ name = "dragoonfly"
 version = "0.1.0"
 edition = "2021"
 description = "A Provable Coded P2P System"
+repository = "https://gitlab.isae-supaero.fr/dragoon/dragoonfly"
+readme = "README.md"
 license = "MIT"
+authors = [
+    "Nathan Dissoubray <nathan.dissoubray@student.isae-supaero.fr>", # author
+    "Antoine Stevan <antoine.stevan@isae-supaero.fr>",               # maintainer
+    "Jonathan Detchart <jonathan.detchart@isae-supaero.fr>",         # maintainer
+]
 
 # See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html