Versioning for #[runtime-interface] (#5328)

* versionned runtime-interface

* use only one additional wasm blob

* alter docs

* formatting, naming and docs

* add comment for test

* version duplicate err

* RuntimeInterfaceItem -> RuntimeInterfaceFunction<

* test naming

* version checking

* remove spaces

* Update primitives/runtime-interface/proc-macro/src/runtime_interface/bare_function_interface.rs

Co-Authored-By: Bastian Köcher <bkchr@users.noreply.github.com>

* remove sanity checks and reduce coverage

* add doc comment

Co-authored-by: Bastian Köcher <bkchr@users.noreply.github.com>

substrate/primitives/runtime-interface/tests/ui/no_duplicate_versions.stderr

@@ -0,0 +1,11 @@
+error: Duplicated version attribute
+ --> $DIR/no_duplicate_versions.rs:7:2
+  |
+7 |     #[version(2)]
+  |     ^
+
+error: Previous version with the same number defined here
+ --> $DIR/no_duplicate_versions.rs:5:2
+  |
+5 |     #[version(2)]
+  |     ^