添加自定义双拼方案
一个声母、韵母可以对应一个或多个按键；一对按键不能直接对应多个拼音（需添加模糊音规则），示例模版：
customspjm:={mmsp:{"0": "1" ; mmsp 双拼标识不可重复，sp结尾 "0" 零声母模式 ; "1" 两字母的韵母同全拼，a、o、e为aa、oo、ee，三字母韵母为韵母首字母+韵母对应键 ; "2" 韵母首字母+韵母对应键 ; "a"-"z" 固定零声母 ; 双拼显示中文名 ,"1": "某某双拼"; ----例外音节-----------不需要可省去-----------; （不完全符合下述声母韵母按键关系的拼音） ,"2":{"xiong": "fs" , "shang": "hs"}; --------------------------------------------; ----模糊音正则规则-----不需要可省去----------- ,"3":[["v'", "[iv]'"] ; v结尾的拼音与i结尾的拼音单向模糊; 双向模糊 ["[iv]'", "[iv]'"] , ["([jqx])u'", "$1[iu]'"] ; ju、qu、xu与ji、qi、xi单向模糊 , ["uan'", "(e|uan)'"]] ; uan结尾的拼音与e结尾的拼音单向模糊; --------------------------------------------; zh、ch、sh按键映射，其他声母修改通过例外音节定义 , "ch" : "i" , "sh" : "u" , "zh" : "v"; 韵母按键映射 , "ai" : "d" , "an" : "j" , "ang" : "h" , "ao" : "c" , "ei" : "w" , "en" : "f" , "eng" : "g" , "er" : "e" , "ia" : "x" , "ian" : "m" , "iang": "l" , "iao" : "n" , "ie" : "p" , "in" : "b" , "ing" : "k" , "iong": "s" , "iu" : "q" , "ong" : "s" , "ou" : "z" , "ua" : "x" , "uai" : "k" , "uan" : "r" , "uang": "l" , "ue" : "t" , "ui" : "v" , "un" : "y" , "uo" : "o" , "v" : "i" , "ve" : "t"}}
