[IMP] package: add task label

Add the task label before every log line in the console.
This helps to know what is logging what.

The current task \"build:* -- --watch\" is split into smaller
task without argument. Otherwise, the labels would also include
the argument, making it very long
[build:js -- --watch] => [watch:ts]

the "serve" task is also rename to better reflect what it does:
serving static files.
In v15, we also have a "server" task which could be confusing

X-original-commit: 6aede4d
Part-of: #2204

package.json

@@ -12,21 +12,21 @@
   ],
   "scripts": {
     "serve-static": "live-server --open=demo --watch=build/o_spreadsheet.js,build/o_spreadsheet.xml,demo",
-    "dev": "npm-run-all build --parallel server serve-static watch:*",
+    "dev": "npm-run-all --print-label build --parallel server serve-static watch:*",
     "server": "node tools/server/main.js",
     "build:js": "tsc --module es6 --incremental",
-    "bundle:js": "rollup -c -m --configDev",
-    "bundle:xml": "node tools/bundle_xml/main.js",
-    "build": "npm-run-all build:js bundle:js \"bundle:xml -- --outDir build\"",
+    "build:bundleJs": "rollup -c -m --configDev",
+    "build:bundleXml": "node tools/bundle_xml/main.js",
+    "build": "npm-run-all build:js build:bundleJs \"build:bundleXml -- --outDir build\"",
     "doc": "typedoc",
     "precommit": "npm run prettier && npm run doc",
     "test": "jest",
     "test:watch": "jest --watch",
     "prettier": "prettier . --write",
     "check-formatting": "prettier . --check",
-    "dist": "tsc --module es6 --declaration --declarationDir dist/types && rollup -c && npm run bundle:xml -- --outDir dist",
+    "dist": "tsc --module es6 --declaration --declarationDir dist/types && rollup -c && npm run build:bundleXml -- --outDir dist",
     "prepare": "husky install",
-    "watch:bundle": "npm run bundle:js -- --watch",
+    "watch:bundle": "npm run build:bundleJs -- --watch",
     "watch:ts": "npm run build:js -- --watch",
     "watch:xml": "node tools/bundle_xml/watch_xml_templates.js",
     "unzipXlsx": "node tools/bundle_xlsx/unzip_xlsx_demo.js",