feat: 集成RT-Thread Nano系统，添加LCD DMA驱动，完善任务框架

tools/extract_rtthread.ps1

@@ -0,0 +1,19 @@
+Add-Type -AssemblyName System.IO.Compression.FileSystem
+$zip = [System.IO.Compression.ZipFile]::OpenRead('d:\20_AI\LSPi\tools\rtthread-nano.zip')
+$dest = 'd:\20_AI\LSPi\libs\thirdparty\rt-thread'
+$prefix = 'rtthread-nano-master/rt-thread/'
+$count = 0
+foreach ($e in $zip.Entries) {
+    if ($e.FullName.StartsWith($prefix) -and !$e.FullName.EndsWith('/')) {
+        $rel = $e.FullName.Substring($prefix.Length)
+        $out = Join-Path -Path $dest -ChildPath $rel
+        $dir = [System.IO.Path]::GetDirectoryName($out)
+        if (!(Test-Path $dir)) {
+            New-Item -ItemType Directory -Path $dir -Force > $null
+        }
+        [System.IO.Compression.ZipFileExtensions]::ExtractToFile($e, $out, $true)
+        $count++
+    }
+}
+$zip.Dispose()
+Write-Host "Extracted $count files to $dest"