1.4 Major: Extension Support + Project Refactoring

[bummoblizard]

Extension is a modular approach to expand Code App. The below code adds remote execution feature using Judge0 in a self-contained way, without affecting the core codebase:

class RemoteExecutionExtension: CodeAppExtension {
    let storage = CloudCodeExecutionManager()
    
    override func onInitialize(
        app: MainApp,
        contribution: CodeAppExtension.Contribution
    ) {
        let panel = Panel(
            labelId: EXTENSION_ID,
            mainView: AnyView(PanelRemoteExecutionMainView().environmentObject(storage)),
            toolBarView: AnyView(PanelRemoteExecutionToolbarView().environmentObject(storage))
        )
        contribution.panel.registerPanel(panel: panel)

        let toolbarItem = ToolbarItem(
            extenionID: EXTENSION_ID,
            icon: "play",
            onClick: {
                if self.storage.displayMode == .input {
                    self.storage.displayMode = .output
                }
                guard let editor = app.activeEditor else {
                    return
                }
                guard let url = URL(string: editor.url) else {
                    return
                }
                guard let languageCode = compilerCodeForPath(path: editor.url) else {
                    return
                }
                self.storage.runCode(directoryURL: url, source: editor.content, language: languageCode)
            },
            shortCut: .init("r", modifiers: [.command]),
            shouldFocusPanelOnTap: true
        )
        contribution.toolbarItem.registerItem(item: toolbarItem)
    }
}