docs: update metadata

Author: johanneskoester

pyproject.toml

@@ -4,6 +4,10 @@ version = "0.1.1"
 description = "A Snakemake executor plugin for cluster jobs that are executed synchronously."
 authors = ["Johannes Koester <[email protected]>"]
 readme = "README.md"
+license = "MIT"
+repository = "https://github.com/snakemake/snakemake-executor-plugin-cluster-sync"
+documentation = "https://snakemake.github.io/snakemake-plugin-catalog/plugins/executor/cluster-sync.html"
+keywords = ["snakemake", "plugin", "executor", "cluster"]
 
 [tool.poetry.dependencies]
 python = "^3.11"