feat(new tools): Date+Duration and Days Calculator

Allows computing specific date + some durations
Allows computing Date interval with many options (include end date, select week days, holidays, business time) and output many statistics

Fix #778, #584, #971

package.json

@@ -44,6 +44,7 @@
     "@tiptap/starter-kit": "2.1.6",
     "@tiptap/vue-3": "2.0.3",
     "@types/figlet": "^1.5.8",
+    "@types/luxon": "^3.4.2",
     "@types/markdown-it": "^13.0.7",
     "@vicons/material": "^0.12.0",
     "@vicons/tabler": "^0.12.0",
@@ -54,11 +55,13 @@
     "change-case": "^4.1.2",
     "colord": "^2.9.3",
     "composerize-ts": "^0.6.2",
+    "countries-and-timezones": "^3.7.2",
     "country-code-lookup": "^0.1.0",
     "cron-validator": "^1.3.1",
     "cronstrue": "^2.26.0",
     "crypto-js": "^4.1.1",
     "date-fns": "^2.29.3",
+    "date-holidays": "^3.23.12",
     "dompurify": "^3.0.6",
     "duration-fns": "^3.0.2",
     "email-normalizer": "^1.0.0",
@@ -74,6 +77,7 @@
     "jwt-decode": "^3.1.2",
     "libphonenumber-js": "^1.10.28",
     "lodash": "^4.17.21",
+    "luxon": "^3.5.0",
     "markdown-it": "^14.0.0",
     "marked": "^10.0.0",
     "mathjs": "^11.9.1",