`scripts` directory is a bit of a mess

[MarcellPerger1]

The scripts directory is a bit of a mess:

$ ls scripts/ -1
build_libs.sh
build_ts.sh
count_lines.sh
coverage.sh
coverage-filtered.sh
find_bad_import.js
format.sh
format_check.sh
jsconfig.json
linter.sh
list_code_files.sh
make_atlas.js
process_coverage.js
test.sh
test_base.sh
update_new_tests.sh
update_tests.sh
update_tests_prune.sh

There are scripts for so many different things:

• tests (coverage, update snapshots, etc.)
• build (.ts files, npm libraries, texture atlas):
• formatting (check, reformat)
• lint (ESLint, custom import linting)
• other (list_code_files.sh, count_lines.sh)