feat(statistics): support for custom date ranges (#3622)

* feat: backend support for statistics custom date ranges
* feat: use seconds-based timestamps on backend instead
* feat: add frontend date selection option
* feat: add tests for lifetime and timed stats
* fix: add error alert when end date is after start date
* fix: wrong label
* fix: no data when start and end date are same day
* fix: use utc dayjs for formatting custom date range on widget
* chore: add dayjs as project dep
* fix: make end date inclusive
* feat: add integration test for custom date period
* fix: incorrect ts expect error comment
* fix: add missing type
* fix: typing errors
* fix(tests): remove type from class attribute definition
* fix: extract default values to function body
* fix: typo
* chore: use small modal
* fix: add missing `FormControl` class
* fix: cast url params to int to enforce type
* chore: `yarn format`

Signed-off-by: Sami Mazouz <sychocouldy@gmail.com>
Co-authored-by: Sami Mazouz <sychocouldy@gmail.com>

extensions/statistics/js/package.json

@@ -7,15 +7,15 @@
         "frappe-charts": "^1.6.2"
     },
     "devDependencies": {
-        "@types/mithril": "^2.0.11",
-        "prettier": "^2.7.1",
-        "flarum-webpack-config": "^2.0.0",
-        "webpack": "^5.73.0",
-        "webpack-cli": "^4.10.0",
         "@flarum/prettier-config": "^1.0.0",
+        "@types/mithril": "^2.0.11",
         "flarum-tsconfig": "^1.0.2",
+        "flarum-webpack-config": "^2.0.0",
+        "prettier": "^2.7.1",
         "typescript": "^4.7.4",
-        "typescript-coverage-report": "^0.6.4"
+        "typescript-coverage-report": "^0.6.4",
+        "webpack": "^5.73.0",
+        "webpack-cli": "^4.10.0"
     },
     "scripts": {
         "dev": "webpack --mode development --watch",