Measure each library's fastest modes in the json_view harness

Address the points of a review from the other libraries' side:

- simdjson 5.0.8 (On-Demand structs, key selectors) and Glaze 9.1.0
- number-skipping modes: yyjson and RapidJSON raw numbers, Boost.JSON
  number_precision::none
- reused parsers and allocators for yyjson, RapidJSON and Boost.JSON
- Boost.JSON parse_into, Glaze generic with double numbers, and the
  same struct types for nlohmann, Glaze, simdjson and serde
- minified copies of twitter.json and citm_catalog.json
- a fourth probe (trailing garbage) and Glaze "(strict)" variants
- a new random variant order in every round, as a variant's time could
  depend on the one before it by up to 15 % on the Mac
- --files for other test files and --conformance for JSONTestSuite,
  with conformance-rs.sh for the Rust program

summarize.py also reports each library's best reused variant.

Signed-off-by: Niels Lohmann <mail@nlohmann.me>

tests/benchmarks/json_view/others/conformance-rs.sh

@@ -0,0 +1,14 @@
+#!/bin/bash
+# the Rust conformance run, one file per process; a file that aborts the process (stack overflow) is rerun one
+# variant per process, and a variant that aborts is printed as crashed
+B=$1; D=$2
+VARS=$($B --conformance $D 1 y_structure_lonely_int.json | sed -n 's/^conformance: [^|]* | \(.*\) | [a-z]*$/\1/p')
+for f in $(ls $D | grep '\.json$'); do
+  out=$($B --conformance $D 1 "$f" 2>/dev/null)
+  if [ $? = 0 ]; then echo "$out" | grep '^conformance:'; continue; fi
+  while IFS= read -r v; do
+    o=$(CONF_VARIANT="$v" $B --conformance $D 1 "$f" 2>/dev/null)
+    if [ $? = 0 ]; then echo "$o" | grep '^conformance:'; else echo "conformance: $f | $v | crashed"; fi
+  done <<< "$VARS"
+done
+echo "done: conformance"