add doc-only substrate entry point crate (#14581)

* add doc-only substrate entry point crate

* document a few more things

* add more

* fix width

* Update primitives/io/src/lib.rs

Co-authored-by: Gonçalo Pestana <g6pestana@gmail.com>

* add link

* update cargo toml file

* fix sp-io docs

* improve

* small update

* add license

* satisfy license job

* add a line about FRAME

* CI happy now

* make CI more happy

* Let the check run for the whole workspace

* Forward the substrate node again as default run

* update binary names

* upate verison test

* Fix fix fix

* Fix

* rename to substrate-node in more places

* Revert "rename to substrate-node in more places"

This reverts commit 66960f84a1b6f1f7c638b4040e28e9fbabb8adf5.

* fix

* Fix build pipeline

* Fix properly plus add some docs

---------

Co-authored-by: Gonçalo Pestana <g6pestana@gmail.com>
Co-authored-by: Bastian Köcher <info@kchr.de>

substrate/scripts/ci/gitlab/pipeline/test.yml

@@ -162,7 +162,7 @@ cargo-check-try-runtime-and-experimental:
     - .test-refs
   script:
     - rusty-cachier snapshot create
-    - time cargo check --locked --features try-runtime,experimental
+    - time cargo check --workspace --locked --features try-runtime,experimental
     - rusty-cachier cache upload
 
 test-deterministic-wasm:
@@ -305,7 +305,7 @@ quick-benchmarks:
     WASM_BUILD_RUSTFLAGS: "-C debug-assertions -D warnings"
   script:
     - rusty-cachier snapshot create
-    - time cargo run --locked --release --features runtime-benchmarks -- benchmark pallet --wasm-execution compiled --chain dev --pallet "*" --extrinsic "*" --steps 2 --repeat 1
+    - time cargo run --locked --release -p node-cli --features runtime-benchmarks -- benchmark pallet --wasm-execution compiled --chain dev --pallet "*" --extrinsic "*" --steps 2 --repeat 1
     - rusty-cachier cache upload
 
 test-frame-examples-compile-to-wasm: