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.opentail.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; [openTail](./bitburner.userinterface.opentail.md)
+
+## UserInterface.openTail() method
+
+Open the tail window of a script.
+
+**Signature:**
+
+```typescript
+openTail(fn?: FilenameOrPID, host?: string, ...args: ScriptArg[]): void;
+```
+
+## Parameters
+
+|  Parameter | Type | Description |
+|  --- | --- | --- |
+|  fn | [FilenameOrPID](./bitburner.filenameorpid.md) | _(Optional)_ Optional. Filename or PID of the script being tailed. If omitted, the current script is tailed. |
+|  host | string | _(Optional)_ Optional. Hostname of the script being tailed. Defaults to the server this script is running on. If args are specified, this is not optional. |
+|  args | [ScriptArg](./bitburner.scriptarg.md)<!-- -->\[\] | Arguments for the script being tailed. |
+
+**Returns:**
+
+void
+
+## Remarks
+
+RAM cost: 0 GB
+
+Opens a script’s logs. This is functionally the same as the tail Terminal command.
+
+If the function is called with no arguments, it will open the current script’s logs.
+
+Otherwise, the PID or filename, hostname/ip, and args… arguments can be used to get the logs from another script. Remember that scripts are uniquely identified by both their names and arguments.
+
+## Example
+
+
+```js
+//Open logs from foo.js on the current server that was run with no args
+ns.tail("foo.js");
+
+//Get logs from foo.js on the foodnstuff server that was run with no args
+ns.tail("foo.js", "foodnstuff");
+
+//Get logs from foo.js on the foodnstuff server that was run with the arguments [1, "test"]
+ns.tail("foo.js", "foodnstuff", 1, "test");
+```
+