[新需求]: 新增字符串、文本国际化处理能力

### 新需求提供了什么功能？

封装ICU中字符串、文本处理能力，在NDK中为开发者提供字符串大小写转换、编码转换等能力，提供文本解析等能力。
  提供接口范围如下：
utypes:
1. 枚举（1）
UErrorCode
2. 函数（3）
u_errorName
U_SUCCESS
U_FAILURE
 
ustring
1. 函数（66）
u_strcat
u_strncat
u_strstr
u_strFindFirst
u_strchr
u_strchr32
u_strrstr
u_strFindLast
u_strrchr
u_strrchr32
u_strpbrk
u_strcspn
u_strspn
u_strtok_r
u_strcmp
u_strcmpCodePointOrder
u_strCompare
u_strCompareIter
u_strCaseCompare
u_strncmp
u_strncmpCodePointOrder
u_strcasecmp
u_strncasecmp
u_memcasecmp
u_strcpy
u_strncpy
u_uastrcpy
u_uastrncpy
u_austrcpy
u_austrncpy
u_memcpy
u_memmove
u_memset
u_memcmp
u_memcmpCodePointOrder
u_memchr
u_memchr32
u_memrchr
u_memrchr32
u_unescape
u_unescapeAt
u_strToUpper
u_strToLower
u_strToTitle
u_strFoldCase
u_strToWCS
u_strFromWCS
u_strToUTF8
u_strFromUTF8
u_strToUTF8WithSub
u_strFromUTF8WithSub
u_strFromUTF8Lenient
u_strToUTF32
u_strFromUTF32
u_strToUTF32WithSub
u_strFromUTF32WithSub
u_strToJavaModifiedUTF8
u_strFromJavaModifiedUTF8WithSub
u_asciiToUpper
u_terminateUChars
u_terminateChars
u_terminateUChar32s
u_terminateWChars
ustr_hashUCharsN
ustr_hashCharsN
ustr_hashICharsN
 
2. 宏定义（2）
U_STRING_DECL
U_STRING_INIT
 
utext
1. 函数（28）
utext_close
utext_openUTF8
utext_openUChars
utext_openUnicodeString
utext_openConstUnicodeString
utext_openReplaceable
utext_openCharacterIterator
utext_clone
utext_equals
utext_nativeLength
utext_isLengthExpensive
utext_char32At
utext_current32
utext_next32
utext_previous32
utext_next32From
utext_previous32From
utext_getNativeIndex
utext_setNativeIndex
utext_moveIndex32
utext_getPreviousNativeIndex
utext_extract
utext_isWritable
utext_hasMetaData
utext_replace
utext_copy
utext_freeze
utext_setup
 
2. 别名（9）
UTextClone
UTextNativeLength
UTextAccess
UTextExtract
UTextReplace
UTextCopy
UTextMapOffsetToNative
UTextMapNativeIndexToUTF16
UTextClose
 
3. 结构体（2）
UTextFuncs
UText
 
 
uconfig
1. 宏定义（26）
UCLN_NO_AUTO_CLEANUP
U_DISABLE_RENAMING
U_NO_DEFAULT_INCLUDE_UTF_HEADERS
U_OVERRIDE_CXX_ALLOCATION
UCONFIG_ONLY_COLLATION
UCONFIG_NO_BREAK_ITERATION
UCONFIG_NO_IDNA
UCONFIG_NO_FORMATTING
UCONFIG_NO_TRANSLITERATION
UCONFIG_NO_REGULAR_EXPRESSIONS
UCONFIG_NO_FILE_IO
UCONFIG_NO_CONVERSION
UCONFIG_NO_LEGACY_CONVERSION
UCONFIG_ONLY_HTML_CONVERSION
UCONFIG_NO_LEGACY_CONVERSION
UCONFIG_NO_NORMALIZATION
UCONFIG_MSGPAT_DEFAULT_APOSTROPHE_MODE
UCONFIG_USE_WINDOWS_LCID_MAPPING_API
UCONFIG_NO_COLLATION
UCONFIG_NO_FORMATTING
UCONFIG_NO_MF2
UCONFIG_NO_TRANSLITERATION
UCONFIG_NO_REGULAR_EXPRESSIONS
UCONFIG_NO_SERVICE
UCONFIG_HAVE_PARSEALLINPUT
UCONFIG_NO_FILTERED_BREAK_ITERATION
 
 
uvernum
1. 宏定义（11）
U_COPYRIGHT_STRING
U_ICU_VERSION_MAJOR_NUM
U_ICU_VERSION_MINOR_NUM
U_ICU_VERSION_PATCHLEVEL_NUM
U_ICU_VERSION_BUILDLEVEL_NUM
U_ICU_VERSION_SUFFIX
U_ICU_ENTRY_POINT_RENAME
U_ICU_VERSION
U_ICU_VERSION_SHORT
UCOL_RUNTIME_VERSION
UCOL_BUILDER_VERSION

### 该需求带来的价值、应用场景？

OpenHarmony/global_i18n

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