Remove the last ConfigEntry state (#1902)

* Get rid of `ConfigEntry::ExternalBIOSEnable`

- Now the BIOS files themselves are checked
- The frontend's `Config::ExternalBIOSEnable` is not affected

* Add `JITArgs`

* Pass the JIT status to the `ARM` constructors

* Encapsulate `NDS::EnableJIT`

* Pass `JITArgs` to `ARMJIT`'s constructor

* Remove the `JIT_*` `ConfigEntry`s in favor of members

- Allow all the JIT args to be set with `NDS::SetJITArgs`
- Encapsulate the JIT-related parameters in `ARMJIT` so they can reset the block cache if changed
- Update the active (or newly-created) console in the frontend with adjusted JIT args

* Make audio bit depth and interpolation configurable in `NDSArgs`

- Define enums for both
- Give those settings default values in `NDSArgs`
- Remove `ConfigEntry::AudioBitDepth`
- Initialize these settings in the relevant SPU constructors

* Move the last DSi-specific logic in `Reset` to its own subclass

* Remove `ConfigEntry::DSi_FullBIOSBoot`

- Add members to `DSi` instead for getting and setting this
- Update the frontend to accommodate these changes

* Oops, missed a spot

* Remove `ConfigEntry::Firm_MAC` and `Platform::GetConfigArray`

- Also move the MAC parsing code to `ROMManager`

* Remove the last `ConfigEntry` state

- Make GDB support configurable via members

* Add some `#ifdef`s that I'd almost forgotten

src/ARM.h

@@ -20,6 +20,7 @@
 #define ARM_H
 
 #include <algorithm>
+#include <optional>
 
 #include "types.h"
 #include "MemRegion.h"
@@ -44,7 +45,7 @@ enum
 const u32 ITCMPhysicalSize = 0x8000;
 const u32 DTCMPhysicalSize = 0x4000;
 
-
+struct GDBArgs;
 class ARMJIT;
 class GPU;
 class ARMJIT_Memory;
@@ -57,7 +58,7 @@ class ARM
 #endif
 {
 public:
-    ARM(u32 num, NDS& nds);
+    ARM(u32 num, bool jit, std::optional<GDBArgs> gdb, NDS& nds);
     virtual ~ARM(); // destroy shit
 
     virtual void Reset();
@@ -202,6 +203,7 @@ protected:
     bool IsSingleStep;
     bool BreakReq;
     bool BreakOnStartup;
+    u16 Port;
 
 public:
     int GetCPU() const override { return Num ? 7 : 9; }
@@ -225,7 +227,7 @@ protected:
 class ARMv5 : public ARM
 {
 public:
-    ARMv5(melonDS::NDS& nds);
+    ARMv5(melonDS::NDS& nds, std::optional<GDBArgs> gdb, bool jit);
     ~ARMv5();
 
     void Reset() override;
@@ -377,7 +379,7 @@ protected:
 class ARMv4 : public ARM
 {
 public:
-    ARMv4(melonDS::NDS& nds);
+    ARMv4(melonDS::NDS& nds, std::optional<GDBArgs> gdb, bool jit);
 
     void FillPipeline() override;