add basic support for title installing

sphaira/include/yati/nx/ncm.hpp

@@ -0,0 +1,39 @@
+#pragma once
+
+#include <switch.h>
+
+namespace sphaira::ncm {
+
+struct PackagedContentMeta {
+    u64 title_id;
+    u32 title_version;
+    u8 meta_type; // NcmContentMetaType
+    u8 content_meta_platform; // [17.0.0+]
+    NcmContentMetaHeader meta_header;
+    u8 install_type; // NcmContentInstallType
+    u8 _0x17;
+    u32 required_sys_version;
+    u8 _0x1C[0x4];
+};
+static_assert(sizeof(PackagedContentMeta) == 0x20);
+
+struct ContentStorageRecord {
+    NcmContentMetaKey key;
+    u8 storage_id;
+    u8 padding[0x7];
+};
+
+union ExtendedHeader {
+    NcmApplicationMetaExtendedHeader application;
+    NcmPatchMetaExtendedHeader patch;
+    NcmAddOnContentMetaExtendedHeader addon;
+    NcmLegacyAddOnContentMetaExtendedHeader addon_legacy;
+    NcmDataPatchMetaExtendedHeader data_patch;
+};
+
+auto GetAppId(const NcmContentMetaKey& key) -> u64;
+
+Result Delete(NcmContentStorage* cs, const NcmContentId *content_id);
+Result Register(NcmContentStorage* cs, const NcmContentId *content_id, const NcmPlaceHolderId *placeholder_id);
+
+} // namespace sphaira::ncm