nodejs: add tests to library (#7694)

* nodejs: add tests to library

* new tests

* remove message splitting

* fix race

* docs

* replace extract-zip with yauzl that it wraps (high severity issue)

* fix ci tests

* skip server tests on macos and win unless SMP_SERVER is set

* fix win test

* fix win test

---------

Co-authored-by: Evgeny @ SimpleX Chat <259188159+evgeny-simplex@users.noreply.github.com>

packages/simplex-chat-nodejs/docs/api.Class.LiveMessage.md

@@ -0,0 +1,98 @@
+[**simplex-chat**](README.md)
+
+***
+
+[simplex-chat](README.md) / [api](Namespace.api.md) / LiveMessage
+
+# Class: LiveMessage
+
+Defined in: [src/api.ts:1005](../api.ts#L1005)
+
+Text shown as a live message while it is written, e.g. a streamed reply.
+
+## Constructors
+
+### Constructor
+
+> **new LiveMessage**(`chat`, `chatType`, `chatId`, `interval?`, `onError?`): `LiveMessage`
+
+Defined in: [src/api.ts:1019](../api.ts#L1019)
+
+#### Parameters
+
+##### chat
+
+`Pick`\<[`ChatApi`](api.Class.ChatApi.md), `"apiSendMessages"` \| `"apiUpdateChatItem"` \| `"apiDeleteChatItems"`\>
+
+Chat API, or an object with its methods to send, update and delete messages.
+
+##### chatType
+
+`ChatType`
+
+Chat type.
+
+##### chatId
+
+`number`
+
+Contact or group ID.
+
+##### interval?
+
+`number` = `3000`
+
+Minimum interval between updates of the live message, in milliseconds.
+
+##### onError?
+
+(`error`) => `void`
+
+Error handler for sending, updating and deleting messages. Errors are logged when it is omitted.
+
+#### Returns
+
+`LiveMessage`
+
+## Methods
+
+### end()
+
+> **end**(`text?`): `Promise`\<`void`\>
+
+Defined in: [src/api.ts:1049](../api.ts#L1049)
+
+Finalize the live message with the text, or with the last text when omitted.
+A message without text is deleted. The next update starts a new live message.
+The returned promise resolves after all queued commands complete.
+
+#### Parameters
+
+##### text?
+
+`string` = `...`
+
+#### Returns
+
+`Promise`\<`void`\>
+
+***
+
+### update()
+
+> **update**(`text`): `void`
+
+Defined in: [src/api.ts:1031](../api.ts#L1031)
+
+Set the text of the live message.
+The first text is sent at once; later texts update the message at most once per interval.
+
+#### Parameters
+
+##### text
+
+`string`
+
+#### Returns
+
+`void`