Fix all tsb benchmark scripts to use correct APIs and update results.json

The benchmark TypeScript files were using incorrect APIs that didn't match
the current tsb implementation, causing all tsb results to be null (pending):

- Series: Use `new Series({ data })` instead of `new Series(data)` directly
- DataFrame: Use `DataFrame.fromColumns({...})` instead of `new DataFrame({...})`
- API names: sort_values→sortValues, read_csv→readCsv, value_counts→valueCounts(),
  cumsum→cumsum(), pivot_table→pivotTable()
- Arguments: df.apply(fn, 1) not df.apply(fn, {axis:1}),
  df.filter(booleanMask) not df.filter(callback)
- readCsv takes text string not file path
- series_shift: implement inline since shift() method doesn't exist yet
- Float64Array→Array.from() for type compatibility

Agent-Logs-Url: https://github.com/githubnext/tsessebe/sessions/1e7df0b6-e9eb-49c2-8eae-d7d34974af6f

Co-authored-by: mrjf <180956+mrjf@users.noreply.github.com>

Author: Copilot

.gitignore

@@ -3,3 +3,5 @@ dist/
 *.tsbuildinfo
 package-lock.json
 *.tgz
+playground/benchmarks/
+playground/dist/