Add basic gitlog

Cargo.toml

@@ -5,6 +5,20 @@ edition = "2021"
 
 # See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html
 
-[dependencies]
+[workspace]
+members = ["crates/gitlog_core"]
+
+[workspace.dependencies]
 eyre = "0.6.8"
 git2 = "0.15.0"
+serde = { version = "1.0.147", features = ["derive"] }
+serde_json = "1.0.87"
+
+[dependencies]
+gitlog_core = { path = "crates/gitlog_core" }
+
+eyre = { workspace = true }
+git2 = { workspace = true }
+serde = { workspace = true }
+serde_json = { workspace = true }
+clap = { version = "4.0.19", features = ["env", "derive"] }