Vulkan: Refactor swapchain code.

[goeiecool9999]

Changes in this PR:

• Change all variants of mainWindow (isMainWindow, main_window, mainwindow) to mainWindow
• Change all variants of chainInfo (swapInfo, swap_info, swap_chain_info, swapchain_info) to chainInfo
• Eliminate all capitalisations of swapchain that aren't Swapchain or swapchain (treated as a single word in Vulkan)
• Renamed SwapChainInfo struct SwapchainInfoVk and put it in separate files
• Separate out a lot of swapchain related code into SwapchainInfoVk
• Put ternary operator to choose between SwapchainInfoVk structures in dedicated function
• Remove a bunch of branches for picking between the two SwapchainInfoVk instances
• Call existing WaitDeviceIdle member function instead of vkWaitDeviceIdle

[goeiecool9999]

Both swapchains used the same VkSurfaceFormat variable. Unlikely to cause issues, but not very safe either.

[goeiecool9999]

I would move the CreateSwapchain function into SwapChainInfo but it depends on a lot of other functions in VulkanRenderer and that might make the PR too large

[lijunyu-cn]

I tried this, but it crashes at the time I startup any game, here's the log.

Crashlog for Cemu 2.0 (experimental)
Date: 22-10-2022 18:32:19

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Stack trace

0x00007ff637b74f18 +0x00354f18 Cemu_release.exe PPCRecompiler_getJumpTableBase
0x00007ff637b7541a +0x0035541a Cemu_release.exe PPCRecompiler_getJumpTableBase
0x00007ff637b7613d +0x0035613d Cemu_release.exe PPCRecompiler_getJumpTableBase
0x00007ffcfbd302e7 +0x001102e7 KERNELBASE.dll UnhandledExceptionFilter
0x00007ffcfe435530 +0x000a5530 ntdll.dll memset
0x00007ffcfe41c876 +0x0008c876 ntdll.dll _C_specific_handler
0x00007ffcfe43241f +0x000a241f ntdll.dll _chkstk
0x00007ffcfe3e14a4 +0x000514a4 ntdll.dll RtlRaiseException
0x00007ffcfe430f4e +0x000a0f4e ntdll.dll KiUserExceptionDispatcher
0x00007ff637b3299c +0x0031299c Cemu_release.exe PPCRecompiler_getJumpTableBase
0x00007ff6379a447c +0x0018447c Cemu_release.exe PPCRecompiler_getJumpTableBase
0x00007ff6378fe74b +0x000de74b Cemu_release.exe memory_getBase
0x00007ff6385368ac +0x00d168ac Cemu_release.exe wxCheckTree::SetFocusFromKbd
0x00007ffcfca57034 +0x00017034 KERNEL32.DLL BaseThreadInitThunk
0x00007ffcfe3e26a1 +0x000526a1 ntdll.dll RtlUserThreadStart
Exception 0xc0000005 at 0x7ff637b3299c(+0x31299c) in module Cemu_release.exe
cemu.exe at 0x7ff637820000

RAX=0000000000000000 RBX=000002254687b0d0 RCX=000002254687b0d0 RDX=0000000000000001
RSP=00000083c51ff630 RBP=00000000000005a0 RDI=0000000000000000 RSI=0000000000000a00
R8 =00000000ffffffff R9 =0000000000000001 R10=000000000000001b R11=00000083c51ff400
R12=0000000000000000 R13=0000000000000000 R14=0000000000000000 R15=0000000000000000

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Game info

Game: Captain Toad: Treasure Tracker
TitleId: 5000010180600
RPXHash: 51c69ca0

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Active PPC instance

Not active

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PPC threads

0e30eaa0 Ent 00e0000c IP 00e00004 LR 00e00000 READY Aff 111 Pri 32 Name Alarm Thread
0e4b9c00 Ent 00e00010 IP 00e00004 LR 00e00000 READY Aff 100 Pri 15 Name {SYS IPC Core 0}
0e4ba29c Ent 00e00010 IP 00e00004 LR 00e00000 READY Aff 010 Pri 15 Name {SYS IPC Core 1}
0e4ba938 Ent 00e00010 IP 00e00004 LR 00e00000 READY Aff 001 Pri 15 Name {SYS IPC Core 2}
0e48b338 Ent 00e00014 IP 00e00004 LR 00e00000 READY Aff 111 Pri 32 Name Callback Thread