Implement logical operators for Function dialog

Description

Currently to enter a logical and/or/not, and(), or() and not() must be used. It would be nice if the logical operators &&, ||, ! can be implemented.

Labplot Version

Release build 2.10.0-1721-g404e6dcc8
Jan 11 2024, 04:33:59
System: Windows 11 Version 2009
Locale: English,United States (Decimal point '.', Group separator ','
Number settings: Decimal point '.', Group separator ',', Exponential 'e', Zero digit '0', Percent '%', Positive/Negative sign '+'/'-' (Updated on restart)
Architecture: x86_64-little_endian-llp64
Kernel: winnt 10.0.22621
C++ Compiler: MSVC 19.29.30148.0
C++ Compiler Flags: /DWIN32 /D_WINDOWS /GR /EHsc /wd4250 /wd4251 /wd4396 /wd4661 /Zc:__cplusplus -W3 -DPSAPI_VERSION=1 /Zc:externC- -O2