[samples][s] 70000 rows samples added

[AcckiyGerman]

• xls file with 65536 rows (more rows is not supported by xls format)
• xlsx with 70000 rows
• csv with 70000 rows

[anuveyatsu]

@AcckiyGerman @zelima @Mikanebu do we need this? Should we merge?

[zelima]

Depends if we have test case with that kind of data

[Mikanebu]

These 2 cases are useful:

• .xls file with 65536 rows (more rows is not supported by xls format)
• .xlsx with 70000 rows