Tracking: Which TPC-H queries can be run?

[jurplel]

Related: #11, #68, #127

Ran with no datafusion optimizations (all of our own optimizations), on the subquery unnesting branch (bowad/subquery-unnest)

Tests were done for whether or not the query works with perfbench. Query result may be incorrect, but it compiles and runs

• [ ] Q1
  • Broken in same way as [previously found issue](https://github.com/cmu-db/optd/issues/
  • perftest issue?
• [ ] Q2
  • Depends on more complete subquery unnesting ruleset
• [x] Q3
• [ ] Q4
  • Depends on subquery unnesting EXISTS support
  • May depend also on left semi join
• [x] Q5
• [x] Q6
• [x] Q7
• [x] Q8
• [x] Q9
• [x] Q10
• [ ] Q11
  • Depends on more complete subquery unnesting
• [x] Q12
• [x] Q13
• [x] Q14
• [ ] Q15
  • Error: db error: ERROR: cannot insert multiple commands into a prepared statement
  • ??? maybe test framework bug
• [ ] Q16
  • Depends on subquery unnesting IN support
  • May depend also on left anti join
• [ ] Q17
  • Depends on more complete subquery unnesting ruleset
• [ ] Q18
  • Depends on subquery unnesting IN support
  • May depend also on left semi join
• [x] Q19
• [ ] Q20
  • Depends on subquery unnesting IN support
  • May depend also on left semi join
• [ ] Q21
  • Depends on subquery unnesting EXISTS support
  • May depend also on left semi and left anti join
• [ ] Q22
  • Depends on subquery unnesting IN support
  • May depend also on left anti join