Add column numbers to stack traces

[bnoordhuis]

quickjs currently only records the line number. Also record the column.

Needs (hopefully) minor tweaks to the token parser and the pc2line RLE data structure that's attached to JSFunctionDef and JSFunctionBytecode objects.

Refs: #134 (comment)

[ammarahm-ed]

For reference this was previously implemented here openwebf/quickjs#12, openwebf/quickjs#1 and some other PRS for quickjs.

[ammarahm-ed]

Here's the related patch submitted on free-lists https://www.freelists.org/post/quickjs-devel/feat-add-the-column-number-feature-of-Error-Object-and-its-stack