Extract db module from project to its own crate

This will let us use it from the telemetry crate.

Co-authored-by: Joseph Lyons <joseph@zed.dev>

Cargo.lock

@@ -1504,6 +1504,19 @@ dependencies = [
  "matches",
 ]
 
+[[package]]
+name = "db"
+version = "0.1.0"
+dependencies = [
+ "anyhow",
+ "async-trait",
+ "collections",
+ "gpui",
+ "parking_lot 0.11.2",
+ "rocksdb",
+ "tempdir",
+]
+
 [[package]]
 name = "deflate"
 version = "0.8.6"
@@ -3950,6 +3963,7 @@ dependencies = [
  "client",
  "clock",
  "collections",
+ "db",
  "fsevent",
  "futures",
  "fuzzy",

crates/db/Cargo.toml

@@ -0,0 +1,22 @@
+[package]
+name = "db"
+version = "0.1.0"
+edition = "2021"
+
+[lib]
+path = "src/db.rs"
+doctest = false
+
+[features]
+test-support = []
+
+[dependencies]
+collections = { path = "../collections" }
+anyhow = "1.0.57"
+async-trait = "0.1"
+parking_lot = "0.11.1"
+rocksdb = "0.18"
+
+[dev-dependencies]
+gpui = { path = "../gpui", features = ["test-support"] }
+tempdir = { version = "0.3.7" }

crates/project/Cargo.toml

@@ -10,6 +10,7 @@ doctest = false
 [features]
 test-support = [
     "client/test-support",
+    "db/test-support",
     "language/test-support",
     "settings/test-support",
     "text/test-support",
@@ -20,6 +21,7 @@ text = { path = "../text" }
 client = { path = "../client" }
 clock = { path = "../clock" }
 collections = { path = "../collections" }
+db = { path = "../db" }
 fsevent = { path = "../fsevent" }
 fuzzy = { path = "../fuzzy" }
 gpui = { path = "../gpui" }
@@ -54,6 +56,7 @@ rocksdb = "0.18"
 [dev-dependencies]
 client = { path = "../client", features = ["test-support"] }
 collections = { path = "../collections", features = ["test-support"] }
+db = { path = "../db", features = ["test-support"] }
 gpui = { path = "../gpui", features = ["test-support"] }
 language = { path = "../language", features = ["test-support"] }
 lsp = { path = "../lsp", features = ["test-support"] }

crates/project/src/project.rs

@@ -1,4 +1,3 @@
-mod db;
 pub mod fs;
 mod ignore;
 mod lsp_command;