add skip/2 as the counterpart to limit/2 (#3181)

I also changed the behavior of limit/2 with negative count to emit an error, like nth/2 does.
Also, I redefined nth/2 using skip/2 to minimize the impact of growth of builtin filters.

jq.1.prebuilt

@@ -1,5 +1,5 @@
 .
-.TH "JQ" "1" "August 2024" "" ""
+.TH "JQ" "1" "September 2024" "" ""
 .
 .SH "NAME"
 \fBjq\fR \- Command\-line JSON processor
@@ -3435,14 +3435,14 @@ jq \'isempty(\.[])\'
 .
 .IP "" 0
 .
-.SS "limit(n; exp)"
-The \fBlimit\fR function extracts up to \fBn\fR outputs from \fBexp\fR\.
+.SS "limit(n; expr)"
+The \fBlimit\fR function extracts up to \fBn\fR outputs from \fBexpr\fR\.
 .
 .IP "" 4
 .
 .nf
 
-jq \'[limit(3;\.[])]\'
+jq \'[limit(3; \.[])]\'
    [0,1,2,3,4,5,6,7,8,9]
 => [0,1,2]
 .
@@ -3450,6 +3450,21 @@ jq \'[limit(3;\.[])]\'
 .
 .IP "" 0
 .
+.SS "skip(n; expr)"
+The \fBskip\fR function skips the first \fBn\fR outputs from \fBexpr\fR\.
+.
+.IP "" 4
+.
+.nf
+
+jq \'[skip(3; \.[])]\'
+   [0,1,2,3,4,5,6,7,8,9]
+=> [3,4,5,6,7,8,9]
+.
+.fi
+.
+.IP "" 0
+.
 .SS "first(expr), last(expr), nth(n; expr)"
 The \fBfirst(expr)\fR and \fBlast(expr)\fR functions extract the first and last values from \fBexpr\fR, respectively\.
 .