Fix AddChannel parameters to accept constant strings

[rlalik]

It adds const cv-specifier to the ids parameter to accept also const char literals.
My editor also fixes trailing white spaces.
I will not be able to fix other PR without this being accepted first.

[PlutoUser]

Could you change Editor settings. We can make cosmetic changes later. At the moment I cannot work like this.

[PlutoUser]

Or make one dedicated merge request first where you clean up all files first so that one can see the important lines later

[rlalik]

What do you think about using clang-format to format whole code in consistent style which can be later also applied to any new file/change (e.g. make format-fix to format all files before commit)? You could choose your preferred style among many: https://clang.llvm.org/docs/ClangFormatStyleOptions.html#configurable-format-style-options

Each style can be additionally customized, I usually use e.g. this one:

BasedOnStyle: LLVM
UseTab: Never
IndentWidth: 4
BreakBeforeBraces: Allman
AllowShortBlocksOnASingleLine: true
AllowShortIfStatementsOnASingleLine: true
IndentCaseLabels: true
ColumnLimit: 120
PointerAlignment: Left
AccessModifierOffset: -4
TabWidth: 4

and here an example file: https://github.com/rlalik/HelloFitty/blob/master/include/hellofitty.hpp
There are many customisable options and finding the optimal style sometime takes several try&check shots. But just go through options and choose the one you like.
GSI does not provide clang-format, I always use it on my local machine where I can configure my full toolchain.

[PlutoUser]

I think you have to pull from the master of this repo to get rid of the unneeded changes and to solve to conflict