Scaffold out new theme-importer crate

Co-Authored-By: Marshall Bowers <1486634+maxdeviant@users.noreply.github.com>

crates/theme_importer/Cargo.toml

@@ -0,0 +1,17 @@
+[package]
+name = "theme_importer"
+version = "0.1.0"
+edition = "2021"
+
+# See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html
+
+[dependencies]
+anyhow.workspace = true
+convert_case = "0.6.0"
+gpui = { package = "gpui2", path = "../gpui2" }
+log.workspace = true
+rust-embed.workspace = true
+serde.workspace = true
+simplelog = "0.9"
+theme = { package = "theme2", path = "../theme2" }
+uuid.workspace = true