初始化：添加本地配置文件

new file:   .gitignore
	new file:   .vscode/settings.json
	new file:   LICENSE
	new file:   README.md
	new file:   SConscript
	new file:   SConstruct
	new file:   algo.py
	new file:   inc/type.h
	new file:   inc/zuc256.h
	new file:   run.sh
	new file:   src/main.c
	new file:   src/zuc256.c

.vscode/settings.json

@@ -0,0 +1,7 @@
+{
+    "files.associations": {
+        "uart.h": "c",
+        "ram_test.h": "c",
+        "stdio.h": "c"
+    }
+}