feat: add persistent CPU search engine and CLI with lifecycle tests

crates/searchi-cli/Cargo.toml

@@ -0,0 +1,16 @@
+[package]
+name = "searchi-cli"
+version.workspace = true
+edition.workspace = true
+license.workspace = true
+description = "Local, offline Searchi indexing and search command line interface"
+
+[[bin]]
+name = "searchi"
+path = "src/main.rs"
+
+[dependencies]
+anyhow.workspace = true
+clap = { version = "4", features = ["derive"] }
+searchi-core = { path = "../searchi-core" }
+serde_json.workspace = true