chore(cargo): filled out Cargo.toml

Added all fields for [package], those where there was nothing of
interest to add were just added as comments for reference. Some of them
might be used later.

Signed-off-by: Christina Sørensen <christina@cafkafk.com>

Cargo.toml

@@ -1,10 +1,30 @@
 [package]
 name = "gg"
 version = "0.1.2"
-edition = "2021"
 authors = ["Christina Sørensen"]
+edition = "2021"
+rust-version = "1.72.0"
+description = "A Rust GitOps/symlinkfarm orchestrator inspired by GNU Stow."
+documentation = "https://github.com/cafkafk/gg"
+readme = "./README.org"
+homepage = "https://github.com/cafkafk/gg"
 repository = "https://github.com/cafkafk/gg"
 license = "GPL-3.0-only"
+keywords = ["git", "declarative", "cli", "devops", "terminal"]
+categories = ["command-line-interface", "command-line-utilities"]
+# workspace = "idk, I have no idea how to use this"
+# build = "build.rs"
+# links = "git2"
+# exclude = "./vacation_photos"
+# include = "./gg_memes"
+publish = false
+# metadata
+# deafult-run
+# autobins
+# autoexamples
+# autotests
+# autobenches
+# resolver
 
 # See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html