Nyx: emuMMC tab realign on reload, sd_out script, bootloader/sys doc

- gui_emummc_tools: re-apply container position after reload so content
  does not jump to top when returning from sub-windows (Change emuMMC, etc.)
- Add sd_out.py: pack build output to output/hekate_X.Y.Z_Nyx_A.B.C.zip
  (payload.bin, bootloader/update.bin, bootloader/sys/*, no ini/patches)
- Add nyx/BOOTLOADER_SYS_ORIGINS.md: where res.pak, thk.bin, emummc.kipm, l4t/ come from

Co-authored-by: Cursor <cursoragent@cursor.com>

nyx/nyx_gui/frontend/gui_emummc_tools.c

@@ -23,6 +23,7 @@
 #include <libs/lvgl/lv_objx/lv_list.h>
 #include <libs/lvgl/lv_objx/lv_mbox.h>
 #include <libs/lvgl/lv_objx/lv_slider.h>
+#include <libs/lvgl/lv_objx/lv_win.h>
 #include <memory_map.h>
 #include <module.h>
 #include <stdlib.h>
@@ -2120,6 +2121,13 @@ lv_res_t create_tab_emummc_tools(lv_obj_t *parent)
 	lv_obj_align(h1, parent, LV_ALIGN_IN_TOP_LEFT, 0, 0);
 	lv_obj_align(h2, h1, LV_ALIGN_OUT_RIGHT_TOP, LV_DPI * 17 / 29, 0);
 
+	/* Re-apply container position after reload so it does not jump when returning from sub-windows */
+	lv_obj_t *win = lv_obj_get_parent(parent);
+	if (win) {
+		lv_obj_t *content = lv_win_get_content(win);
+		if (content)
+			lv_obj_align(parent, content, LV_ALIGN_IN_TOP_MID, -20, 50);
+	}
 
 	return LV_RES_OK;
 }