Add devhub crate

Cargo.toml

@@ -93,6 +93,7 @@ members = [
 	"cumulus/test/runtime",
 	"cumulus/test/service",
 	"cumulus/xcm/xcm-emulator",
+	"devhub",
 	"polkadot",
 	"polkadot/cli",
 	"polkadot/core-primitives",

devhub/Cargo.toml

@@ -0,0 +1,12 @@
+[package]
+name = "devhub"
+description = "A crate for the Polkadot SDK's reference documentation and tutorials"
+license = "GPL-3.0-or-later WITH Classpath-exception-2.0"
+homepage = "https://substrate.io"
+repository.workspace = true
+authors.workspace = true
+edition.workspace = true
+version = "1.0.0"
+
+# The dependencies are only needed for docs.
+[dependencies]

devhub/src/lib.rs

@@ -0,0 +1,6 @@
+//! # Polkadot SDK Developer Hub
+//!
+//! The devhub contains reference documentation and a tutorial for building with the Polkadot SDK.
+
+pub mod reference_docs;
+pub mod tutorial;

devhub/src/reference_docs/extrinsics.rs

@@ -0,0 +1,14 @@
+//! # Extrinsics and Calls
+//!
+//! **This page is currently under construction.**
+//!
+//! Reference documentation for the different types of extrinsics and how to construct them.
+//!
+//! An extrinsic is some data that can be added to a block, and is either signed (a transaction) or
+//! unsigned (an inherent).
+//!
+//! > Note: The term "call", "extrinsic", and "dispatchable" often get mixed together.
+//! > Here is a sentence which should help clarify their relationship, and why they are such similar
+//! > terms:
+//! > **Users submit an **extrinsic** to the blockchain, which is **dispatched** to a Pallet
+//! > **call**.**

devhub/src/reference_docs/mod.rs

@@ -0,0 +1,9 @@
+//! # Reference Documentation
+//!
+//! Reference material for common concepts in Substrate.
+//!
+//! - [Extrinsics](extrinsics)
+//! - [Weights](weights)
+
+pub mod extrinsics;
+pub mod weights;

devhub/src/reference_docs/weights.rs

@@ -0,0 +1,5 @@
+//! # Weights and Benchmarking
+//!
+//! **This page is currently under construction.**
+//!
+//! Reference material for how weights and benchmarking works.

devhub/src/tutorial/mod.rs

@@ -0,0 +1,3 @@
+//! The Polkadot SDK Master Tutorial
+
+pub mod step1;

devhub/src/tutorial/step1.rs

@@ -0,0 +1,3 @@
+//! # Step 1
+//!
+//! **This module is currently under construction.**