feat: add miri sysroot (#9)

Author: rollinggulf1999

.github/workflows/build_and_release_rust.yml

@@ -95,6 +95,7 @@ jobs:
           ./x.py install -i --stage 0 llvm-tools
           ./x.py install -i --stage 0 cargo
           ./x.py install -i --stage 0 miri
+          MIRI_LIB_SRC=library MIRI_SYSROOT=${DESTDIR}/usr/local/lib/rustlib/x86_64-unknown-linux-gnu/miri-sysroot cargo miri setup 
 
       - name: Create tarball
         run: |