API document to explain how to use web map core

[dadiorchen]

We need to sort out and articulate the API document for clients who want to integrate our map.
The document should explain how to use the core, and API of the core, for example: who to jump to a position of the map.

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Some hints:

• Please read our readme for more information/guide/tutorial.
• Here is an engineering book in Greenstand.
• To know more about our organization, visit our website.
• If you want to join the slack community (some resources need the community member's permission), please leave your email address.