Move MSA Client ID to the same place as the others

MSA Client ID has been moved to CMakeLists.txt, and defaults to the
Client ID for the PolyMC application.

Removed secrets/notsecrets library, replace with (temporary?)
program_info subdirectory.

program_info/launcher.rc

@@ -0,0 +1,29 @@
+#ifndef WIN32_LEAN_AND_MEAN
+#define WIN32_LEAN_AND_MEAN
+#endif
+#include <windows.h>
+
+IDI_ICON1               ICON    DISCARDABLE     "Launcher.ico"
+1 RT_MANIFEST "Launcher.manifest"
+
+VS_VERSION_INFO VERSIONINFO
+FILEVERSION     1,0,0,0
+FILEOS          VOS_NT_WINDOWS32
+FILETYPE        VFT_APP
+BEGIN
+        BLOCK "StringFileInfo"
+        BEGIN
+                BLOCK "000004b0"
+                BEGIN
+                        VALUE "CompanyName", "MultiMC Contributors"
+                        VALUE "FileDescription", "A Minecraft Launcher"
+                        VALUE "FileVersion", "1.0.0.0"
+                        VALUE "ProductName", "Launcher"
+                        VALUE "ProductVersion", "5"
+                END
+        END
+        BLOCK "VarFileInfo"
+        BEGIN
+                VALUE "Translation", 0x0000, 0x04b0 // Unicode
+        END
+END