Correct lineinfo for accent quoted symbols in proc definition (#10399)

* compiler/parser: preserve lineinfo for accent quoted symbols

Previously the lineinfo for symbol $$$ in this example is:

    proc `$$$`
             ^

After this commit:

    proc `$$$`
          ^

* compiler/semstmts: correct lineinfo for accent quoted idents

Previously nimsuggest would highlight this as:

    proc `$$$`
         ^~~

After this commit:

    proc `$$$`
          ^~~

* nimsuggest/tests: add a test for accent quoted proc

Disabled by default

nimsuggest/tests/taccent_highlight.nim

@@ -0,0 +1,8 @@
+proc `$$$`#[!]#
+
+discard """
+disabled:true
+$nimsuggest --tester $file
+>highlight $1
+highlight;;skProc;;1;;6;;3
+"""