Fix, bug: CSV import module

[Endlessdelate]

Fix, bug: CSV import program incorrectly recognizes CSV files with "r\n"(CRLF) as line breaks, causing files to not be imported correctly

[azonenberg]

What exactly is the bug? Is it that \r\n is interpreted as two line breaks, not one, on unix systems?

[azonenberg]

Also, all comments should be in English since the majority of the development team speaks English as a first or second language, but most of us (myself included) can't read Chinese well if at all. Please translate them.

[Endlessdelate]

The file.wfm.csv exported from my R&S oscilloscope uses CRLF ("\r\n") as line breaks, which cannot be correctly imported into your software on Windows system. The log information shows errors such as "ERROR: Malformed file." Therefore, I analyzed and modified the source code. After testing, it is now compatible with three types of line breaks: "\n" (Unix), "\r\n" (Windows), and "\r" (Mac). Of course, I will also translate the Chinese content in the program before submitting it again.

[Endlessdelate]

Meanwhile, you can also use the following test files to test the original program.

sin_waveform_CR.csv
sin_waveform_LF.csv
sin_waveform_CRLF.csv