Split and decompile parts of JUTGamePad (#33)

* JUTGamePad.o: elaborate classes, split

* JUTGamePad::CButton: decompile functions:
- clear()
- clear(JUTGamePad*)
- setRepeat()

* elaborate PAD* types in new header

* decompile getNumBit()

* elaborate JUTGamePad fields

* move retyped externs from variables.h to JUTGamePad.h

* elaborate JUTGamePadLongPress

* JUTGamePad: decompile functions

- initList()
- init()
- clear()
- assign()
- checkResetCallback()
- checkResetSwitch()
- clearForReset()
- recalibrate()

JUTGamePad: decompile

* JUTGamePad::CStick::clear(): decompile

* JUTGamePad::CRumble: decompile functions

- startMotor()
- stopMotor()
- triggerPatternedRumble()
- startPatternedRumble()
- stopPatternedRumbleAtThePeriod()
- setEnabled()

* JUTGamePadLongPress::checkCallback(): decompile

* nonmatching: JUTGamePad::CRumble::update() and JUTGamePad::getGamePad

* JSUList<T>: allow access to JSUPtrList functions

* functions.h: clear out some func decls that are no longer used

* add notes in JUTGamePad.cpp

* clang-format + add back extern funcs

* fix some more extern labels

Co-authored-by: Pheenoh <pheenoh@gmail.com>

include/pad/pad.h

@@ -0,0 +1,38 @@
+#ifndef __PAD_H__
+#define __PAD_H__
+
+typedef enum PADMask {
+    PAD_CHAN3_BIT = (1 << 28),
+    PAD_CHAN2_BIT = (1 << 29),
+    PAD_CHAN1_BIT = (1 << 30),
+    PAD_CHAN0_BIT = (1 << 31),
+
+    __PAD_MASK_FORCE_ENUM_U32 = 0xffffffff,
+} PADMask;
+
+typedef struct PADStatus {
+    u16 button;
+    s8 stick_x;
+    s8 stick_y;
+    s8 substick_x;
+    s8 substick_y;
+    u8 trigger_left;
+    u8 trigger_right;
+    u8 analog_a;
+    u8 analog_b;
+    s8 error;
+} PADStatus;
+
+extern "C" {
+u32 PADInit(void);
+void PADSetAnalogMode(u32 mode);
+void PADSetSpec(int spec);
+s32 PADReset(PADMask mask);
+void PADClampCircle(PADStatus* status);
+void PADClamp(PADStatus* status);
+u32 PADRead(PADStatus* status);
+void PADControlMotor(s32 channel, u32 command);
+s32 PADRecalibrate(PADMask mask);
+}
+
+#endif