Treeview Docs

Added Treeview docs
Improved some stuff in the treeview object

docs/objects/Treeview/removeChild.md

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+## removeChild
+
+### Description
+
+The `removeChild` method allows you to remove a child node from its parent node within a Treeview object. This can be useful for managing the hierarchy of nodes in your Treeview and keeping it up to date with the required information.
+
+### Parameters
+
+1. `node` The child node to be removed from its parent node.
+
+### Returns
+
+1. `node` The node in use
+
+### Usage
+
+* Creates a Treeview, adds a child node to the root node, and removes the child node from the root node:
+
+```lua
+local basalt = require("basalt")
+
+local mainFrame = basalt.createFrame()
+local treeview = mainFrame:addTreeview()
+
+local rootNode = treeview:getRoot()
+local childNode = rootNode.addChild("Child Node")
+
+-- Remove the child node from the root node
+rootNode.removeChild(childNode)
+
+basalt.autoUpdate()
+```
+
+In this example, a Treeview object is created and added to the mainFrame. The `getRoot` method is used to access the root node, and a new child node is added to it using the `addChild` method. The `removeChild` method is then called on the root node with the child node as a parameter, effectively removing the child node from the Treeview.