feat(AppConfig): iterate how apps are managed

- auth clients are always shared, cannot be disabled
- custom connections are enabled by default, can be disabled
- any existing connections can be reconnected regardless of its AppConfig or AppAuthClient states

packages/web/src/components/SplitButton/index.jsx

@@ -67,17 +67,12 @@ export default function SplitButton(props) {
           }}
           open={open}
           anchorEl={anchorRef.current}
+          placement="bottom-end"
           transition
           disablePortal
         >
-          {({ TransitionProps, placement }) => (
-            <Grow
-              {...TransitionProps}
-              style={{
-                transformOrigin:
-                  placement === 'bottom' ? 'center top' : 'center bottom',
-              }}
-            >
+          {({ TransitionProps }) => (
+            <Grow {...TransitionProps}>
               <Paper>
                 <ClickAwayListener onClickAway={handleClose}>
                   <MenuList autoFocusItem>