build: simplify and strict tools (#14154)

bin/create-json-schema.js

package.json

test/json-schema.ts

tools/check-fenced-code.mjs

tools/check-git-version.mjs

tools/clean-cache.mjs

tools/docs/manager.ts

tools/docs/schema.ts

tools/docs/utils.ts

tools/docs/versioning.ts

tools/generate-schema.ts

tools/utils/index.ts

tsconfig.json

tsconfig.strict.json