Add support for juliaup (#208)

* Add support for juliaup

* Update config.rs

* Change the position for Juliaup Step.

* Update generic.rs

.github/workflows/check-and-lint.yaml

@@ -22,7 +22,7 @@ jobs:
       - name: Setup Rust
         uses: dtolnay/rust-toolchain@master
         with:
-          toolchain: '${{ env.RUST_VER }}'
+          toolchain: '${{ env.RUST_VER }}
           components: rustfmt
 
       - name: Run cargo fmt