Sqljs upgrade and benchmark improvements (#103)

* Update to sql.js 1.7.0

* Update to emsdk 3.0.1, replace/remove deprecated/irrelevant settings

- Renamed .bc extension to .o
- Remove deprecated INLINING_LIMIT setting
- Remove SINGLE_FILE

* Update SQLite to 3.39.3

* Collect and plot CPU and RSS charts from the benchmark containers

* Move procpath commands to a playbook, plot only top 2 RSS & CPU usage

* Optimise for size, put -flto for both compile and link

lib/sql-js/benchmark/procpath/top2_cpu.sql

@@ -0,0 +1,29 @@
+WITH diff_all AS (
+    SELECT
+        record_id,
+        ts,
+        stat_pid,
+        stat_utime + stat_stime - LAG(stat_utime + stat_stime) OVER (
+            PARTITION BY stat_pid
+            ORDER BY record_id
+        ) tick_diff,
+        ts - LAG(ts) OVER (
+            PARTITION BY stat_pid
+            ORDER BY record_id
+        ) ts_diff
+    FROM record
+), diff AS (
+    SELECT * FROM diff_all WHERE tick_diff IS NOT NULL
+), one_time_pid_condition AS (
+    SELECT stat_pid
+    FROM record
+    GROUP BY 1
+    ORDER BY SUM(stat_utime + stat_stime) DESC
+    LIMIT 2
+)
+SELECT
+    ts,
+    stat_pid pid,
+    100.0 * tick_diff / (SELECT value FROM meta WHERE key = 'clock_ticks') / ts_diff value
+FROM diff
+JOIN one_time_pid_condition USING(stat_pid)