refactor: type consolidation, chat component promotion, generation UX fixes, converter cleanup

feat: schema v2, tool_calling evaluation, BFCL converter, UI polish, and expression fixes (#18)

chore (maintainance): Update depdencies, copyright and minimal support for chat template.

fix (CSS): Minor CSS fix for performance overview tab.

fix (performance overview): Use normalized scores for radar plots.

feat (Filters): Allow user to select all values in a filter.

fix (CSS): Minor CSS fixes for performance view.

feat (aggregator): Added support for median aggregator.

fix (RAG): Crash due to missing context in RAG.

feat (Performance Overview): Allow user to hide metrics from tables.

chore: Initial commit.