Create a reusable workflow for installation of all the toolchains.

Author: evgenyzdanovich

.github/workflows/toolchains.yml

@@ -0,0 +1,36 @@
+name: Install toolchains
+
+#on:
+#  workflow_call:
+
+on:
+  pull_request:
+  merge_group:
+  push:
+    branches: [main]
+
+jobs:
+  install-toolchains:
+    permissions:
+      # Needed to install the toolchain.
+      contents: write
+    runs-on: ubuntu-latest
+
+    steps:
+      - name: Set up Clang
+        uses: egor-tensin/setup-clang@v1
+        with:
+          version: latest
+          platform: x64
+
+      - name: Install SP1 Toolchain
+        run: |
+          curl -fsSL --proto '=https' --tlsv1.2 https://sp1.succinct.xyz | bash && ~/.sp1/bin/sp1up
+          export PATH=~/.sp1/bin:$PATH
+          cargo prove --version
+
+      - name: Install RISC0 Toolchain
+        run: |
+          curl -fsSL --proto '=https' --tlsv1.2 https://risczero.com/install | bash && ~/.sp1/bin/rzup install
+          export PATH=~/.risc0/bin:$PATH
+          cargo risczero --version