Tpt update and fetch one by candidate key

[AnyhowStep]

Still needs a lot of clean up and tests, just making the PR before I complete it

[codecov-io]

Codecov Report

Merging #65 into master will increase coverage by 0.04%.
The diff coverage is 100%.

@@            Coverage Diff            @@
##           master     #65      +/-   ##
=========================================
+ Coverage   95.95%     96%   +0.04%     
=========================================
  Files        1050    1054       +4     
  Lines       48305   48651     +346     
  Branches     2579    2606      +27     
=========================================
+ Hits        46353   46707     +354     
+ Misses       1942    1934       -8     
  Partials       10      10

Impacted Files	Coverage Δ
...-table-per-type/util/execution/insert-and-fetch.ts	98.38% <100%> (-0.51%)	⬇️
...sign-pattern-table-per-type/table-per-type-impl.ts	100% <100%> (ø)	⬆️
...attern-table-per-type/util/execution/absorb-row.ts	100% <100%> (ø)
src/table/table-impl.ts	100% <100%> (ø)	⬆️
...r-type/util/execution/update-and-fetch-one-impl.ts	100% <100%> (ø)
src/expr-library/control-flow/coalesce.ts	100% <100%> (ø)	⬆️
...-type/util/execution/invoke-assignment-delegate.ts	100% <100%> (ø)
...c/column/array-util/constructor/from-column-map.ts	100% <100%> (ø)	⬆️
...execution/update-and-fetch-one-by-candidate-key.ts	100% <100%> (ø)
src/expr-library/control-flow/if-null.ts	100% <100%> (ø)	⬆️
... and 9 more

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[AnyhowStep]

Just added a commit that fixes #25 by using a trampoline type.

https://github.com/AnyhowStep/tsql/pull/65/files#diff-0214b2fefabaf1617e690660683db775R226-R237