Weekly Cronjob fetching artifacts and generating polkadot.rs file. (#1352)

* github CI action cronjob

* add commit message

* fix the CI yml files

* binary crate for CI script with substrate-runner

* update the CI script

* correct the artifacts script

* remove bash script

scripts/artifacts/Cargo.toml

@@ -0,0 +1,14 @@
+[package]
+name = "artifacts"
+authors.workspace = true
+edition.workspace = true
+version.workspace = true
+rust-version.workspace = true
+license.workspace = true
+repository.workspace = true
+documentation.workspace = true
+homepage.workspace = true
+description = "Internal tool to regenerate artifacts"
+
+[dependencies]
+substrate-runner = { workspace = true }