fix incorrect text codec detection

[StoneMoe]

Description

Current implementation of generic.detect_encoding() use a guess list to detect text encoding
which will break all codecs which use similar encoding method to the codec ordered before it
affect WineCommand output log afaik

For example:

• codepage 936 use by Wine by default when setting language to Simplified Chinese, which is actually gb2312/gbk in different Windows version
• gb2312 use one or two bytes for encoding
• utf-16 use two bytes for encoding
• they use different codepoint table
• utf-16 ordered before gb2312 in guess list
• gb2312 encoded bytes will be matched as utf-16

then garbled text happened:

>>> '你好'.encode('gb2312').decode('utf-16')
'\ue3c4쎺'

or

>>> 'こんにちは'.encode('euc-jp').decode('utf-16')
'뎤\uf3a4쮤솤쾤'

This PR replaced the detect_encoding() with chardet library
which is already included in Bottles

Type of change

• Bug fix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Breaking change (fix or feature that would cause existing functionality to not work as expected)
• This change requires a documentation update

How Has This Been Tested?

• Change to CJK language and install font via Bottles, then reg add log will print correct message that piped from command stdout

[github-actions]

Pylint result on modfied files:

------------- Module bottles.backend.utils.generic
bottles/backend/utils/generic.py:66:0: W1405: Quote delimiter " is inconsistent with the rest of the file (inconsistent-quotes)
bottles/backend/utils/generic.py:79:0: W1405: Quote delimiter " is inconsistent with the rest of the file (inconsistent-quotes)
bottles/backend/utils/generic.py:79:0: W1405: Quote delimiter " is inconsistent with the rest of the file (inconsistent-quotes)
bottles/backend/utils/generic.py:25:0: C0414: Import alias does not rename original package (useless-import-alias)
bottles/backend/utils/generic.py:25:0: E0401: Unable to import 'chardet' (import-error)
bottles/backend/utils/generic.py:61:4: W0702: No exception type(s) specified (bare-except)
bottles/backend/utils/generic.py:54:8: C0415: Import outside toplevel (ctypes) (import-outside-toplevel)
bottles/backend/utils/generic.py:28:0: W0612: Unused variable 'validate_url' (unused-variable)
bottles/backend/utils/generic.py:43:0: W0612: Unused variable 'detect_encoding' (unused-variable)
bottles/backend/utils/generic.py:51:0: W0612: Unused variable 'is_glibc_min_available' (unused-variable)
bottles/backend/utils/generic.py:66:0: W0612: Unused variable 'sort_by_version' (unused-variable)
bottles/backend/utils/generic.py:76:0: W0612: Unused variable 'get_mime' (unused-variable)
bottles/backend/utils/generic.py:85:0: W0612: Unused variable 'random_string' (unused-variable)

Your code has been rated at 5.64/10