Port: play the cursor sound when the mouse moves a menu cursor - #107

Character page portraits take hover and click; only a portrait click
confirms, and left clicks do nothing while a character change loads.
Cedric's repair board takes hover, wheel and item clicks, and its input
no longer reaches his command list after it closes. The menu pointer
keeps one facing: retail mirrors the hand at Max, which made the
pointer's body jump across its hotspot.

Retail Options rows and buttons follow hover and the wheel scrolls the
list; Help entries follow hover and scroll, and the wheel turns its
picture pages. Rows are hit where they are drawn and only inside the
list's clip, so a row sliding under the footer cannot be clicked.

The FPS capture and presentation now record the FPS counter and menu
pointer through one helper, so a capture shows the pointer where a
presented frame does. The usage text and PC.md say so.

…ane base)

A notch over the bag moved the cursor a row while the board stayed put, so
with the pointer on the top row the selection and its Sell price popup
walked away from it. A goods list or bag longer than its window now
scrolls one row per notch through the retail eased scroll (MenuMouseScroll
for the list, the ITEM page's ScrollTop and WheelTarget for the bag), and
the cursor takes the entry that settles under the pointer. Rows sliding
out of the window can no longer be hovered, so a hover cannot scroll the
pane back. A list that fits still moves its cursor through the retail keys.
The wheel never enters an empty goods list, as retail keeps the bag in
front when stock runs out.

Hover and the wheel moved several menu cursors silently: shop goods, bag
and quantity board, the ITEM page's build-up list and the same index on
another ITEM panel. MenuMouseCursorSound plays SYSTEM_SE_CURSOR at most
once a tick from the adapters that set a cursor themselves; paths where
retail already sounds the move (synthesized directions, MenuMouseMove,
the post-hook cursor check) are left to retail. In the shop, the adapter
sounds its own pane or quantity change only when the retail press it
sends will not move, so each real change sounds once, at limits too. The
fishing-rod stats no longer sound twice. PC SETTINGS rows stay silent, as
with the keyboard.