support Column break points

[phoityne]

supportting Column break points #14784

ghci supports column option with :break command.

:break [<mod>] <l> [<col>] set a breakpoint at the specified location

[phoityne]

In locally, done.
shipping with next release.

but vscode seemes like still having some probems.
#21167, #21142
(this issue was fixed. #22249)

on phoityne's test, same issue has occurred.

not sure but, this code might be deleting breakpoints on the same line. distinct bps per line.

src/vs/workbench/parts/debug/common/debugModel.ts
L859 // Remove duplicate breakpoints. This can happen when an adapter updates a line number of a breakpoint
L860 this.breakpoints = distinct(this.breakpoints, bp => bp.uri.toString() + bp.lineNumber);
L861 this._onDidChangeBreakpoints.fire();

[phoityne]

vscode is fixed. #23659.

and, phoityne was released.