rename files, implement config page and various new features

kateaiconfigpage.h

@@ -0,0 +1,33 @@
+#pragma once
+
+#include "kateai.h"
+#include <KTextEditor/ConfigPage>
+
+#include <QLineEdit>
+#include <QRadioButton>
+
+class KateAiConfigPage : public KTextEditor::ConfigPage
+{
+    Q_OBJECT
+private:
+    QLineEdit lineUrl;
+    QRadioButton btnCompletion;
+    QRadioButton btnInstruct;
+    KateAiPlugin* m_plugin;
+
+public:
+    explicit KateAiConfigPage(QWidget *parent = nullptr, KateAiPlugin *plugin = nullptr);
+    ~KateAiConfigPage() override
+    {
+    }
+
+    QString name() const override;
+    QString fullName() const override;
+    QIcon icon() const override;
+
+    void apply() override;
+    void reset() override;
+    void defaults() override
+    {
+    }
+};