API: Move tail-related APIs to another namespace (#1935)

* API: Move tail-related APIs to another namespace

* Add missing RAM cost config

* Remove setTailFontSize from NS namespace

markdown/bitburner.userinterface.rendertail.md

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+<!-- Do not edit this file. It is automatically generated by API Documenter. -->
+
+[Home](./index.md) &gt; [bitburner](./bitburner.md) &gt; [UserInterface](./bitburner.userinterface.md) &gt; [renderTail](./bitburner.userinterface.rendertail.md)
+
+## UserInterface.renderTail() method
+
+Render a tail window.
+
+**Signature:**
+
+```typescript
+renderTail(pid?: number): void;
+```
+
+## Parameters
+
+|  Parameter | Type | Description |
+|  --- | --- | --- |
+|  pid | number | _(Optional)_ Optional. PID of the script having its tail rendered. If omitted, the current script is used. |
+
+**Returns:**
+
+void
+
+## Remarks
+
+RAM cost: 0 GB
+
+Tail windows are rendered at an interval defined in game settings. This function renders the tail window of the specified script immediately.
+