Added Daybreak, a system updater homebrew (#1073)

* Implemented a system updater homebrew (titled Daybreak)

* git subrepo pull ./troposphere/daybreak/nanovg

subrepo:
  subdir:   "troposphere/daybreak/nanovg"
  merged:   "c197ba2f"
upstream:
  origin:   "https://github.com/Adubbz/nanovg-deko.git"
  branch:   "master"
  commit:   "c197ba2f"
git-subrepo:
  version:  "0.4.1"
  origin:   "???"
  commit:   "???" (+1 squashed commits)

Squashed commits:

[232dc943] git subrepo clone https://github.com/Adubbz/nanovg-deko.git troposphere/daybreak/nanovg

subrepo:
  subdir:   "troposphere/daybreak/nanovg"
  merged:   "52bb784b"
upstream:
  origin:   "https://github.com/Adubbz/nanovg-deko.git"
  branch:   "master"
  commit:   "52bb784b"
git-subrepo:
  version:  "0.4.1"
  origin:   "???"
  commit:   "???"

* daybreak: switch to using hiddbg for home blocking (+1 squashed commits)

Squashed commits:

[4bfc7b0d] daybreak: block the home button during installation

troposphere/daybreak/source/ams_su.h

@@ -0,0 +1,51 @@
+/*
+ * Copyright (c) 2018-2020 Atmosphère-NX
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms and conditions of the GNU General Public License,
+ * version 2, as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
+ * more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+#pragma once
+#include <switch.h>
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+typedef struct {
+    u32 version;
+    bool exfat_supported;
+    u32 num_firmware_variations;
+    u32 firmware_variation_ids[16];
+} AmsSuUpdateInformation;
+
+typedef struct {
+    Result result;
+    NcmContentMetaKey invalid_key;
+    NcmContentId invalid_content_id;
+} AmsSuUpdateValidationInfo;
+
+Result amssuInitialize();
+void   amssuExit();
+Service *amssuGetServiceSession(void);
+
+Result amssuGetUpdateInformation(AmsSuUpdateInformation *out, const char *path);
+Result amssuValidateUpdate(AmsSuUpdateValidationInfo *out, const char *path);
+Result amssuSetupUpdate(void *buffer, size_t size, const char *path, bool exfat);
+Result amssuSetupUpdateWithVariation(void *buffer, size_t size, const char *path, bool exfat, u32 variation);
+Result amssuRequestPrepareUpdate(AsyncResult *a);
+Result amssuGetPrepareUpdateProgress(NsSystemUpdateProgress *out);
+Result amssuHasPreparedUpdate(bool *out);
+Result amssuApplyPreparedUpdate();
+
+#ifdef __cplusplus
+}
+#endif