You can not exceed the 100 entries of your Capital Gains in TurboTax, so there is no way to "add" more items. You will have to condense some of your entries to add them all.
CRA is fine with you entering a large amount of Capital Gains/Losses as a total. You can even work out in a spreadsheet or document of your choice showing the total Gain / Loss that you made (i.e. consolidate them) and report this way in the Capital Gains Profile. Be sure to keep your documents available to submit as proof if requested.
