voids request - Move the filesystem files to root/ as it will be used in both Minecraft.Client and Minecraft.World (#819)

* Move Filesystem to root/include/ as per devoiders request

* Filesystem -> lce_filesystem

include/lce_filesystem/lce_filesystem.cpp

@@ -0,0 +1,73 @@
+#include "lce_filesystem.h"
+
+#ifdef _WINDOWS64
+#include <windows.h>
+#endif // TODO: More os' filesystem handling for when the project moves away from only Windows
+
+#include <stdio.h>
+
+bool FileOrDirectoryExists(const char* path)
+{
+#ifdef _WINDOWS64
+    DWORD attribs = GetFileAttributesA(path);
+    return (attribs != INVALID_FILE_ATTRIBUTES);
+#else
+    #error "FileOrDirectoryExists not implemented for this platform"
+    return false;
+#endif
+}
+
+bool FileExists(const char* path)
+{
+#ifdef _WINDOWS64
+    DWORD attribs = GetFileAttributesA(path);
+    return (attribs != INVALID_FILE_ATTRIBUTES && !(attribs & FILE_ATTRIBUTE_DIRECTORY));
+#else
+    #error "FileExists not implemented for this platform"
+    return false;
+#endif
+}
+
+bool DirectoryExists(const char* path)
+{
+#ifdef _WINDOWS64
+    DWORD attribs = GetFileAttributesA(path);
+    return (attribs != INVALID_FILE_ATTRIBUTES && (attribs & FILE_ATTRIBUTE_DIRECTORY));
+#else
+    #error "DirectoryExists not implemented for this platform"
+    return false;
+#endif
+}
+
+bool GetFirstFileInDirectory(const char* directory, char* outFilePath, size_t outFilePathSize)
+{
+#ifdef _WINDOWS64
+    char searchPath[MAX_PATH];
+    snprintf(searchPath, MAX_PATH, "%s\\*", directory);
+
+    WIN32_FIND_DATAA findData;
+    HANDLE hFind = FindFirstFileA(searchPath, &findData);
+
+    if (hFind == INVALID_HANDLE_VALUE)
+    {
+        return false;
+    }
+
+    do
+    {
+        if (!(findData.dwFileAttributes & FILE_ATTRIBUTE_DIRECTORY))
+        {
+            // Found a file, copy its path to the output buffer
+            snprintf(outFilePath, outFilePathSize, "%s\\%s", directory, findData.cFileName);
+            FindClose(hFind);
+            return true;
+        }
+    } while (FindNextFileA(hFind, &findData) != 0);
+
+    FindClose(hFind);
+    return false; // No files found in the directory
+#else
+    #error "GetFirstFileInDirectory not implemented for this platform"
+    return false;
+#endif
+}

include/lce_filesystem/lce_filesystem.h

@@ -0,0 +1,6 @@
+#pragma once
+
+bool FileOrDirectoryExists(const char* path);
+bool FileExists(const char* path);
+bool DirectoryExists(const char* path);
+bool GetFirstFileInDirectory(const char* directory, char* outFilePath, size_t outFilePathSize);