feat(political-office): enhance political office benefits and salary computation

- Added a new hierarchyLevel field to PoliticalOfficeType for better categorization of political roles.
- Updated computePoliticalDailySalaryPayout function to incorporate hierarchy level in salary calculations, allowing for more dynamic salary adjustments based on office rank.
- Modified SQL scripts to reflect changes in political office benefits, ensuring compatibility with the new salary structure.
- Enhanced localization files to support updated benefit descriptions and salary formats across multiple languages.
- Improved UI components to display the new salary calculations and benefits accurately in the PoliticsView.

frontend/src/i18n/locales/en/falukant.json

@@ -576,7 +576,7 @@
             "voteAllError": "Error while submitting the votes",
             "applyError": "Application could not be submitted.",
             "benefits": {
-                "daily_salary": "Daily office stipend (once per day): about {amount}",
+                "daily_salary": "Daily office stipend (once per day): {amount}",
                 "tax_exemption": "Tax exemption: {regions}",
                 "tax_exemption_all": "Tax exemption: all regional levels",
                 "reputation_periodic": "+{gain} reputation every {days} days (office bonus)",