Support snippet compilation

Original handling of snippets only worked if the current selected theme was a staticTheme. This now fully merges all snippets through the theme chain no matter what the top-level theme is. So user themes built on 5ePHB can benefit from 5ePHB snippets too.

User input of user snippets will be a later PR, but merging them into static snippets is now supported.

client/homebrew/editor/editor.jsx

@@ -425,6 +425,7 @@ const Editor = createClass({
 					historySize={this.historySize()}
 					currentEditorTheme={this.state.editorTheme}
 					updateEditorTheme={this.updateEditorTheme}
+					snippetBundle={this.props.snippetBundle}
 					cursorPos={this.codeEditor.current?.getCursorPosition() || {}} />
 
 				{this.renderEditor()}