[Task #82] docs: add OceanBase + Camel cookbook

[PerryHan521]

What

• Add OceanBase + Apache Camel cookbook with Docker setup (CE 4.3.5+) and index tuning tips by data scale.

Testing

• Not required (docs only).

[CLAassistant]

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[LINxiansheng]

Please sign CLA firstly.