Data tokenization examples

[dgreeninger]

Added in some examples to benchmark Vault Data Transform with external and internal storage to the docs directory.

vault-benchmark run -config=internal-tokenization.hcl
2025-07-15T08:58:32.094-0700 [INFO]  vault-benchmark: setting up targets
2025-07-15T08:58:32.317-0700 [INFO]  vault-benchmark: starting benchmarks: duration=1m0s

2025-07-15T08:59:32.920-0700 [INFO]  vault-benchmark: benchmark complete
Target: https://127.0.0.1:8200
op                     count  rate       throughput  mean          95th%         99th%        successRatio
tokenization_passport  1445   24.071068  23.844397   417.561489ms  518.510247ms  615.79752ms  100.00%

vault-benchmark run -config=external-tokenization.hcl
2025-07-15T09:00:15.069-0700 [INFO]  vault-benchmark: setting up targets
2025-07-15T09:00:15.377-0700 [INFO]  vault-benchmark: starting benchmarks: duration=1m0s
2025-07-15T09:01:15.384-0700 [INFO]  vault-benchmark: benchmark complete
Target: https://127.0.0.1:8200
op                     count   rate         throughput   mean        95th%       99th%       successRatio
tokenization_passport  104009  1733.447769  1733.324816  5.764051ms  12.09886ms  22.17683ms  100.00%