chore: 更新版本号至0.2.0并同步相关文件

更新bios.lua和installer.lua中的版本号至0.2.0，确保安装程序和系统版本信息一致

data/computercraft/lua/bios.lua

@@ -1,4 +1,4 @@
-_G._HOST = _G._HOST .. " (LeonOS 0.1.9)"
+_G._HOST = _G._HOST .. " (LeonOS 0.2.0)"
 local fs = rawget(_G, "fs")
 
 _G._RC_ROM_DIR = _RC_ROM_DIR or (...) and fs.exists("/leonos") and "/leonos" or "/rom"
@@ -31,8 +31,8 @@ local rc = {
   _NAME = "LeonOS",
   _VERSION = {
     major = 0,
-    minor = 1,
-    patch = 9
+    minor = 2,
+    patch = 0
   },
   queueEvent  = pull(os, "queueEvent"),
   startTimer  = pull(os, "startTimer"),