add package metadata

Author: Calcoph

Cargo.toml

@@ -2,6 +2,13 @@
 name = "imgui-gilrs"
 version = "0.1.0"
 edition = "2021"
+description = "Gamepad navigation support for imgui"
+license = "MIT/Apache-2.0"
+keywords = ["gilrs", "imgui", "gamepad", "game controller"]
+readme = "README.md"
+homepage = "https://github.com/Calcoph/imgui-gilrs"
+repository = "https://github.com/Calcoph/imgui-gilrs"
+exclude = [".gitignore"]
 
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