feat: initial commit for arrow-pg library

Author: sunng87

Cargo.lock

@@ -1,6 +1,6 @@
 [workspace]
 resolver = "2"
-members = ["datafusion-postgres", "datafusion-postgres-cli"]
+members = ["datafusion-postgres", "datafusion-postgres-cli", "arrow-pg"]
 
 [workspace.package]
 version = "0.5.1"
@@ -14,8 +14,10 @@ repository = "https://github.com/datafusion-contrib/datafusion-postgres/"
 documentation = "https://docs.rs/crate/datafusion-postgres/"
 
 [workspace.dependencies]
-pgwire = "0.30.2"
+arrow = "55"
 datafusion = { version = "47", default-features = false }
+pgwire = "0.30.2"
+postgres-types = "0.2"
 tokio = { version = "1", default-features = false }
 
 [profile.release]

Cargo.toml

@@ -0,0 +1,20 @@
+[package]
+name = "arrow-pg"
+description = "Arrow data mapping and encoding/decoding for Postgres"
+version = "0.1.0"
+edition.workspace = true
+license.workspace = true
+authors.workspace = true
+keywords.workspace = true
+homepage.workspace = true
+repository.workspace = true
+documentation.workspace = true
+readme = "../README.md"
+
+[dependencies]
+arrow.workspace = true
+bytes = "1"
+chrono = { version = "0.4", features = ["std"] }
+pgwire = { workspace = true, default-features = false }
+postgres-types.workspace = true
+rust_decimal = { version = "1.37", features = ["db-postgres"] }