[Improvement]: Optimize ams configuration to support parsing of time interval and storage related configuration items when both values and units are specified

[Jzjsnow]

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What would you like to be improved?

Currently, the ams configuration is inconsistent in the type of time interval related configuration items, some of which are of Duration type, such as http-server.session-timeout, and some of which are of Long type, such as refresh-external-catalogs.interval, which may be misused by the user.
In addition, storage-related parameters such as thrift-server.max-message-size only support Long type (default unit is byte). It would be more user-friendly to support user-specified units, as in the Apache Flink configuration.

How should we improve?

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Are you willing to submit PR?

• Yes I am willing to submit a PR!

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