nintendoswitch: Add env parser and removed unused stuff

*	Heap allocation based on available ram
*	Added homebrew launcher parser (for overriden heap)
*	Removed unused stuff (moved to gonx)
*	Kept require code at minimum to work in a real device
*	Moved everything to a single file

src/runtime/runtime_nintendoswitch.s

@@ -1,45 +1,40 @@
-.section .text.armGetSystemTick, "ax", %progbits
-.global  armGetSystemTick
-.type    armGetSystemTick, %function
-.align 2
-armGetSystemTick:
+// Macro for writing less code
+.macro FUNC name
+    .section .text.\name, "ax", %progbits
+    .global \name
+    .type \name, %function
+    .align 2
+\name:
+.endm
+
+FUNC armGetSystemTick
     mrs x0, cntpct_el0
     ret
 
-.section .text.nxOutputString, "ax", %progbits
-.global nxOutputString
-.type nxOutputString, %function
-.align 2
-.cfi_startproc
-nxOutputString:
-	svc 0x27
-	ret
-.cfi_endproc
+// Horizon System Calls
+// https://switchbrew.org/wiki/SVC
+FUNC svcSetHeapSize
+    str x0, [sp, #-16]!
+    svc 0x1
+    ldr x2, [sp], #16
+    str x1, [x2]
+    ret
 
-.section .text.exit, "ax", %progbits
-.global exit
-.type exit, %function
-.align 2
-exit:
-	svc 0x7
-	ret
+FUNC svcExitProcess
+    svc 0x7
+    ret
 
-.section .text.setHeapSize, "ax", %progbits
-.global setHeapSize
-.type setHeapSize, %function
-.align 2
-setHeapSize:
-	str x0, [sp, #-16]!
-	svc 0x1
-	ldr x2, [sp], #16
-	str x1, [x2]
-	ret
+FUNC svcSleepThread
+    svc 0xB
+    ret
 
+FUNC svcOutputDebugString
+    svc 0x27
+    ret
 
-.section .text.sleepThread, "ax", %progbits
-.global sleepThread
-.type sleepThread, %function
-.align 2
-sleepThread:
-	svc 0xB
-	ret
+FUNC svcGetInfo
+    str x0, [sp, #-16]!
+    svc 0x29
+    ldr x2, [sp], #16
+    str x1, [x2]
+    ret