Finish documenting #[pallet::xxx] macros (#2638)

Closes paritytech/polkadot-sdk-docs#35

- Moves pallet proc macro docs to `frame_support`
- Adds missing docs
- Revise revise existing docs, adding compiling doctests where
appropriate

---------

Co-authored-by: command-bot <>
Co-authored-by: Kian Paimani <[email protected]>

docs/sdk/src/guides/your_first_pallet/mod.rs

@@ -250,14 +250,16 @@
 // of event is probably not the best.
 //!
 //! With the explanation out of the way, let's see how these components can be added. Both follow a
-//! fairly familiar syntax: normal Rust enums, with an extra `#[frame::event/error]` attribute
-//! attached.
+//! fairly familiar syntax: normal Rust enums, with extra
+//! [`#[frame::event]`](frame::pallet_macros::event) and
+//! [`#[frame::error]`](frame::pallet_macros::error) attributes attached.
 #![doc = docify::embed!("./src/guides/your_first_pallet/mod.rs", Event)]
 #![doc = docify::embed!("./src/guides/your_first_pallet/mod.rs", Error)]
 //!
-//! One slightly custom part of this is the `#[pallet::generate_deposit(pub(super) fn
-//! deposit_event)]` part. Without going into too much detail, in order for a pallet to emit events
-//! to the rest of the system, it needs to do two things:
+//! One slightly custom part of this is the [`#[pallet::generate_deposit(pub(super) fn
+//! deposit_event)]`](frame::pallet_macros::generate_deposit) part. Without going into too
+//! much detail, in order for a pallet to emit events to the rest of the system, it needs to do two
+//! things:
 //!
 //! 1. Declare a type in its `Config` that refers to the overarching event type of the runtime. In
 //! short, by doing this, the pallet is expressing an important bound: `type RuntimeEvent:
@@ -266,7 +268,8 @@
 //! store it where needed.
 //!
 //! 2. But, doing this conversion and storing is too much to expect each pallet to define. FRAME
-//! provides a default way of storing events, and this is what `pallet::generate_deposit` is doing.
+//! provides a default way of storing events, and this is what
+//! [`pallet::generate_deposit`](frame::pallet_macros::generate_deposit) is doing.
 #![doc = docify::embed!("./src/guides/your_first_pallet/mod.rs", config_v2)]
 //!
 //! > These `Runtime*` types are better explained in
@@ -280,8 +283,9 @@
 #![doc = docify::embed!("./src/guides/your_first_pallet/mod.rs", runtime_v2)]
 //!
 //! In this snippet, the actual `RuntimeEvent` type (right hand side of `type RuntimeEvent =
-//! RuntimeEvent`) is generated by `construct_runtime`. An interesting way to inspect this type is
-//! to see its definition in rust-docs:
+//! RuntimeEvent`) is generated by
+//! [`construct_runtime`](frame::runtime::prelude::construct_runtime). An interesting way to inspect
+//! this type is to see its definition in rust-docs:
 //! [`crate::guides::your_first_pallet::pallet_v2::tests::runtime_v2::RuntimeEvent`].
 //!
 //!

substrate/frame/support/Cargo.toml

@@ -66,6 +66,7 @@ aquamarine = { version = "0.5.0" }
 [dev-dependencies]
 assert_matches = "1.3.0"
 pretty_assertions = "1.2.1"
+sp-timestamp = { path = "../../primitives/timestamp", default-features = false }
 frame-system = { path = "../system" }
 sp-crypto-hashing = { path = "../../primitives/crypto/hashing" }
 
@@ -96,6 +97,7 @@ std = [
 	"sp-std/std",
 	"sp-tracing/std",
 	"sp-weights/std",
+	"sp-timestamp/std"
 ]
 runtime-benchmarks = [
 	"frame-system/runtime-benchmarks",