JSON-RPC API: Understanding V1 vs V2, calling Flow APIs from plugins

### Checks

- [X] I have checked that this issue has not already been reported.

- [X] I am using the latest version of Flow Launcher.

### Problem Description

The docs for JSON-RPC appear inaccurate or misleading in three ways: https://www.flowlauncher.com/docs/#/json-rpc

1. The dataflow `-->` and `<--` is backwards. "Query" is sent from flow to the plugin. Title/Subtitle/IconPath is sent from the plugin to Flow.
2. The example response from Plugin to Flow is incorrect. Should be:
```diff
-<-- {"Title": "title", "SubTitle": "sub title", "IconPath": "favicon.ico"}
+--> {"result": [{"Title": "title", "SubTitle": "sub title", "IcoPath": "favicon.ico"}]}
```

3. The API List is misleading because it is impossible for RPC Plugins to call many (all?) of those methods. For example, how is an RPC plugin supposed to call `ChangeQuery` or `ShowMsg`?

### To Reproduce

_No response_

### Screenshots

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### Flow Launcher Version

1.19.2

### Windows Build Number

22631.4169

### Error Log

_No response_