Bump version to 1.0.0-rc, auto-detect prerelease in CI

Version strings containing a hyphen (e.g. 1.0.0-rc) are automatically
marked as prerelease on GitHub.

Author: alexmx

.codechat-version

@@ -1 +1 @@
-0.1.0
+1.0.0-rc

.github/workflows/release.yml

@@ -34,6 +34,16 @@ jobs:
           echo "VERSION=$VERSION" >> $GITHUB_OUTPUT
           echo "Version: $VERSION"
 
+      - name: Detect prerelease
+        id: prerelease
+        run: |
+          VERSION=${{ steps.version.outputs.VERSION }}
+          if [[ "$VERSION" == *-* ]]; then
+            echo "is_prerelease=true" >> $GITHUB_OUTPUT
+          else
+            echo "is_prerelease=false" >> $GITHUB_OUTPUT
+          fi
+
       - name: Check if tag already exists
         id: check_tag
         run: |
@@ -98,7 +108,7 @@ jobs:
           tag_name: v${{ steps.version.outputs.VERSION }}
           name: Release v${{ steps.version.outputs.VERSION }}
           draft: false
-          prerelease: false
+          prerelease: ${{ steps.prerelease.outputs.is_prerelease == 'true' }}
           generate_release_notes: true
           files: |
             packages/cli/codechat-${{ steps.version.outputs.VERSION }}.tgz