Add license, Cargo.toml, etc.

.gitignore

@@ -0,0 +1,14 @@
+# Generated by Cargo
+# will have compiled files and executables
+debug/
+target/
+
+# Remove Cargo.lock from gitignore if creating an executable, leave it for libraries
+# More information here https://doc.rust-lang.org/cargo/guide/cargo-toml-vs-cargo-lock.html
+Cargo.lock
+
+# These are backup files generated by rustfmt
+**/*.rs.bk
+
+# MSVC Windows builds of rustc generate these, which store debugging information
+*.pdb

Cargo.toml

@@ -0,0 +1,14 @@
+[workspace]
+members = ["crates/*"]
+resolver = "2"
+
+[workspace.package]
+edition = "2021"
+rust-version = "1.71"
+homepage = "https://astral.sh"
+documentation = "https://astral.sh"
+repository = "https://github.com/astral-sh/puffin"
+authors = ["Astral Software Inc. <hey@astral.sh>"]
+license = "MIT OR Apache-2.0"
+
+[workspace.dependencies]

crates/puffin-cli/Cargo.toml

@@ -0,0 +1,8 @@
+[package]
+name = "puffin-cli"
+version = "0.1.0"
+edition = "2021"
+
+# See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html
+
+[dependencies]

crates/puffin-cli/src/main.rs

@@ -0,0 +1,3 @@
+fn main() {
+    println!("Hello, world!");
+}