steel decimal crate implemented

Cargo.toml

@@ -1,5 +1,5 @@
 [workspace]
-members = ["client", "server", "common", "search"]
+members = ["client", "server", "common", "search", "steel_decimal"]
 resolver = "2"
 
 [workspace.package]
@@ -40,4 +40,10 @@ tracing = "0.1.41"
 # Search crate
 tantivy = "0.24.1"
 
+# Steel_decimal crate
+rust_decimal = { version = "1.37.2", features = ["maths", "serde"] }
+rust_decimal_macros = "1.37.1"
+thiserror = "2.0.12"
+regex = "1.11.1"
+
 common = { path = "./common" }