[native]Add option to register catalogs in Prestissimo without restart

[mohsaka]

Description

Currently, if we want to add a new catalog in the Prestissimo server we have to bring it down. With the addition of this change, we can add existing catalogs into the etc/catalog directory and load them without a restart.

Motivation and Context

Modifying and deleting catalogs require a much larger change. So we are allowing for additional catalogs for now.

Impact

Users may call the /v1/catalog/register endpoint via a http request such as,

curl -X POST http://127.0.0.1:7777/v1/catalog/hive2 \
     -H "Content-Type: application/json" \
     -d '{"connector.name": "hive"}'

Test Plan

Added new test case to add workers without the catalog. Afterwards adding the catalog to the workers' working directory and calling the API to register it.

Then checking to make sure the query is working properly.

Contributor checklist

• Please make sure your submission complies with our contributing guide, in particular code style and commit standards.
• PR description addresses the issue accurately and concisely. If the change is non-trivial, a GitHub Issue is referenced.
• Documented new properties (with its default value), SQL syntax, functions, or other functionality.
• If release notes are required, they follow the release notes guidelines.
• Adequate tests were added if applicable.
• CI passed.

Release Notes

Please follow release notes guidelines and fill in the release notes below.

== RELEASE NOTES ==

General Changes
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Hive Connector Changes
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If release note is NOT required, use:

== NO RELEASE NOTE ==

[tdcmeehan]

Why not PUT -> /v1/catalog? i.e. the PUT is an act of registration or update? register is a verb, and RESTful convention is the endpoint represents a "thing" (a noun). Seems like our noun here is catalog.

[tdcmeehan]

Why not use properties syntax as the MIME type (i.e. text/x-java-properties)? That way the format for on-disk and off-disk is the same?

[mohsaka]

Closed for further discussion.