ci: Add oasis-install

Author: amela

.github/workflows/install-oasis.yml

@@ -0,0 +1,47 @@
+name: install-oasis
+on:
+  workflow_call:
+    inputs:
+      release_tag:
+        required: false
+        type: string
+  # A push occurs to one of the matched branches.
+  push:
+    branches:
+      - master
+      - stable/*
+  # Or when a pull request event occurs for a pull request against one of the
+  # matched branches.
+  pull_request:
+    branches:
+      - master
+      - stable/*
+jobs:
+  install:
+    runs-on: ubuntu-latest
+    steps:
+      - name: Debug inputs
+        run: |
+          echo "Raw input: '${{ inputs.release_tag }}'"
+          echo "Input length: ${#TAG}"
+          TAG="${{ inputs.release_tag }}"
+          if [ -z "$TAG" ]; then
+            echo "TAG is empty or unset"
+          else
+            echo "TAG is set to: '$TAG'"
+          fi
+      - name: Determine release tag
+        id: tag
+        run: |
+          TAG="${{ inputs.release_tag }}"
+          if [ -z "$TAG" ]; then
+            echo "No input tag provided → using latest release."
+            TAG=$(curl -fsSL https://api.github.com/repos/oasisprotocol/cli/releases/latest | jq -r .tag_name)
+          fi
+          echo "tag=$TAG" >> $GITHUB_OUTPUT
+      - name: Expose PATH
+        run: echo "$PWD" >> "$GITHUB_PATH"
+       - name: Verify installation
+        run: |
+          echo "Oasis CLI installed successfully!"
+          oasis --version

.github/workflows/test-install-oasis.yml

@@ -0,0 +1,5 @@
+jobs:
+  use-oasis-cli:
+    uses: your-org/ci/.github/workflows/install-oasis.yml@main
+    with:
+      release_tag: v0.16.0