repo: organize sources, headers, and deps into subdirectories (#2917)

Signed-off-by: Jared Van Bortel <jared@nomic.ai>

gpt4all-chat/qml/MyCheckBox.qml

@@ -1,42 +0,0 @@
-import QtCore
-import QtQuick
-import QtQuick.Controls
-import QtQuick.Controls.Basic
-
-CheckBox {
-    id: myCheckBox
-
-    background: Rectangle {
-        color: "transparent"
-    }
-
-    indicator: Rectangle {
-        implicitWidth: 26
-        implicitHeight: 26
-        x: myCheckBox.leftPadding
-        y: parent.height / 2 - height / 2
-        border.color: theme.checkboxBorder
-        color: "transparent"
-        radius: 3
-
-        Rectangle {
-            width: 14
-            height: 14
-            x: 6
-            y: 6
-            radius: 2
-            color: theme.checkboxForeground
-            visible: myCheckBox.checked
-        }
-    }
-
-    contentItem: Text {
-        text: myCheckBox.text
-        font: myCheckBox.font
-        opacity: enabled ? 1.0 : 0.3
-        color: theme.textColor
-        verticalAlignment: Text.AlignVCenter
-        leftPadding: myCheckBox.indicator.width + myCheckBox.spacing
-    }
-    ToolTip.delay: Qt.styleHints.mousePressAndHoldInterval
-}