Finished unification and fixed clear script

src/lib/components/TestCaseSimulationSharingModal.svelte

src/lib/server/auditors/config.ts

src/lib/server/budgets.ts

src/lib/server/config.ts

src/lib/server/test_cases.ts

src/routes/budgets/+server.ts

src/routes/budgets/simulations/+server.ts

src/routes/budgets/simulations/[simulation]/+page.server.ts

src/routes/test_cases/+server.ts

src/routes/test_cases/simulations/+server.ts

...outes/test_cases/simulations/[simulation]/+page.server.ts

src/scripts/clear_budget_simulations_cache.ts