* convert logger to output a query graph
* avoid duplicating branch paths to shrink output graph
* separate different branching paths
* include all branches which found unique states
* track the reason for ending each branches execution
* track the result type of each branch
* make edges rely on history index instead of program_id, to avoid errors when looping
* add state diff to query graph
* drop redundant table info
* rework graph to show state changes, rework logger to store state snapshots
* show state on the previous operation
* gather duplicate state changes into clusters to reduce repetition
* draw invisible connections between unknown instructions by program_i
* clean up dot format string escaping
* add test case from #1960 (update returning all columns)
* add tests for #2939 (update returning only the PK column)
* allow inserting into a table using only the index
* improve null handling of IfNull, fix output type of NewRowId
* add NoResult nodes for branches which don't log a result, as a sanity check
* add short-circuit to all logging operations
* remove duplicate logging checks, and make logging enabled/disabled consistently depend on sqlx::explain instead of sqlx for capture & sqlx::explain for output
* add failing test for awkwardly nested/filtered count subquery
* handle special case of return operation to fix failing test
* require trace log level instead of using whatever log level statement logging was configured to use
Inlined format args make code more readable, and code more compact.
I ran this clippy command to fix most cases, and then cleaned up a few trailing commas and uncaught edge cases.
```
cargo clippy --bins --examples --benches --tests --lib --workspace --fix -- -A clippy::all -W clippy::uninlined_format_args
```
* Add failing tests
* remove unnecessary functions, clarify function names
* simplify access to cursor columns with helper methods
* split table info from cursor info so that cursors can share table info
* fix test expectations
* add failing test for nested orderby
* log query paths which were abandoned due to invalid state or looping. Allow instructions to be executed a small number of times to fix nested order by query
* add failing testcase using nested orderby
* fix handling of sequence/offset and rewind
* fix handling when sqlite nests records inside of records
* add test of temporary table handling
* WIP add test failure for temp table access
* fix support for temp tables
* add tests for sqlite datetime functions
* add basic date and time function support
* handle gosub opcode correctly
* add group by test
* fix group by handling
* add additional passing group by test
* add test case for simple limit query
* fix IfPos & If touching wrong branches state, fix IfPos using wrong branch criteria
* add test for large offsets
* add short-circuit for possible query offset loops
* add groupby query that is predicted incorrectly
* fix handling of integer cast failures
* add tests for single-row aggregate results
* fix handling of null-based branching
* add test for coercion of text by sum
* fix calculation of sum value coercion
* add failing test for recursive with query
* add logic for delete operation to fix queries grouping by columns from a recursive query
* add failing test cases for update/delete return into
* fix regression in null tracking by improving tracking of cursor empty/full state
* add failing test case for order by column types
* Add support for SorterOpen,SorterInsert,SorterData
* add failing test case for unions
* fix range copy/move implementation
* fix wrong copy/move range
* remove calls to dbg!
* reproduce incorrect nullability for materialized views
* split ephemeral/index-only table handling from real table handling
* add test for literal null, expect nullability to be identified from table information
* gather interpreter state into a struct, no change in behaviour
* prevent infinite loops that could arise once branching is supported
* track nullability alongside the datatype instead of in a separate lookup
* implement basic comprehension of branching opcodes
* fix datatype calculation of aggregates which are never 'stepped' through
* implement coroutine and return operations, including tracking of 'actual' integer value stored in the register by Integer/InitCoroutine/Yield operations.
* strip unnecessary history field out
* Modify variable test to expect bind-variable outputs to be nullable, rather than unknown
* add partially commented-out union tests, simplify code to satisfy simplest union case
* fix unit test incorrectly expecting primary keys to be implicitly not-null
* add failing test for recursive tables
* add logging of query explain plan
* track explain plan execution history
* broken RowData implementation (doesn't alias)
* Implement OpenPseudo tables as an alias of a register value
* fix comment
* clean up logging code warnings
* use cfg to omit QueryPlanLogger unless sqlite feature is used
* Reproduce github issue#1249: Left joins in sqlite can break the query macros
* Fix panic caused by unknown cursor columns when executing NullRow command. Fixes#1249
