The ProgressBar is just a string which has a length equal to the
innerRect of the table. The length of the innerRect is considered to be
100% and the rest of the progress is tracked in relation to it.
The Progress is displayed with the help of the color formatting strings
in tview
link: https://pkg.go.dev/github.com/rivo/tview#hdr-Colors
the progress length which is calculated by finding the percentage of the
innerRect that matches with the given completion and then at that length
the "[-:-:-]" is inserted with the help of the insertAt function in
utils.go. "[-:-:-]" represents resetting of colors.
