Remove goto for lua5.1 support

[PlumBlossomMaid]

fix: replace goto with repeat-break for Lua 5.1 compatibility

• Lua 5.1 does not support the goto keyword introduced in Lua 5.2
• Replaced goto continue + ::continue:: pattern with repeat ... break ... until true
• This allows lua-express to run on Lua 5.1 without any syntax errors
• No functional changes, all original comments preserved

Modified files:

• express/router/init.lua (while loop in handle method)
• express/misc/path.lua (normalizeArray function and resolve function loop)