feat: Technology Rebalancing (#108)

* fix: Adapt ship build time technologies

- Adjusted costs
- fast_*_ship_construction now use multipliers
- Removed faster_*_ship_construction techs

* fix: Adjust ship tech requirements

* fix: Adjust ship tech tags and add new tags

* fix: Adjust ship tech costs

* fix: Flatten tech tree by removing "unlock technologies"

* fix: Reduce costs of many techs

* refactor: Return results from generate_sequence

* refactor: Allow generating sequence for multiple variables

* refactor: Use generate_sequence more often

* fix: Remove exponential tech effect growth

* fix: Adjust district_specialization tree costs

* fix: Move research district tech trees

* fix: Move other district tech trees

* feat: Building_specialization tech tree

* style: Banners in technologies.ts

* style: Move techs around in technologies.ts

* feat: System_specialization tech tree

* feat: economy_specialization and biology_specialization tech tree

* feat: Make specialization technologies reduce their tag costs and time