chore: optimize deployment workflow

- Moved dist/ directory to .gitignore and untracked build artifacts.
- Added npm `files` field to ensure dist/ is included in published packages.
- Introduced `release:patch/minor/major` npm scripts for one-step deployment.
- Refined Gulp tasks:
    - Integrated Rollup into the `assets` deployment pipeline.
    - Updated `gitCommit` to capture all source and configuration files.
- Removed redundant `http-server` dependency and `serve` script.

Author: jtblin

.gitignore

@@ -1,5 +1,5 @@
 node_modules/
-dist/angular-chart.js.tar.gz
+dist/
 test/fixtures/shots/
 coverage/
 playwright-report/