vim-patch:9.0.0244: cannot easily get the list of sourced scripts (#22596)

Problem:    Cannot easily get the list of sourced scripts.
Solution:   Add the getscriptinfo() function. (Yegappan Lakshmanan,
            closes vim/vim#10957)

f768c3d19c

Cherry-pick usr_41.txt change from a later runtime update.

Co-authored-by: Yegappan Lakshmanan <yegappan@yahoo.com>

src/nvim/eval.lua

@@ -189,6 +189,7 @@ return {
     gettabinfo={args={0, 1}, base=1},
     gettabvar={args={2, 3}, base=1},
     gettabwinvar={args={3, 4}, base=1},
+    getscriptinfo={},
     gettagstack={args={0, 1}, base=1},
     gettext={args=1, base=1},
     getwininfo={args={0, 1}, base=1},