test: add sqlness compatibility runner (#8334)

* test: add sqlness compatibility runner

Signed-off-by: discord9 <discord9@163.com>

* fix: update remote dyn filter request

Signed-off-by: discord9 <discord9@163.com>

* fix: satisfy compat runner clippy

Signed-off-by: discord9 <discord9@163.com>

* test: add legacy jsonb compatibility case

Signed-off-by: discord9 <discord9@163.com>

* test: align legacy jsonb compat assertion

Signed-off-by: discord9 <discord9@163.com>

* fix: align remote dyn filter proto fields

Signed-off-by: discord9 <discord9@163.com>

* test: simplify compat topology and SQL handling

Signed-off-by: discord9 <discord9@163.com>

* fix: switch compat runner to target binary

Signed-off-by: discord9 <discord9@163.com>

* test: drop compat SQLNESS comment handling

Signed-off-by: discord9 <discord9@163.com>

* test: support sqlness commands in compat

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* test: fix compat protocol reconnect

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* test: filter compat cases by version

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* test: add merge mode compat case

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* test: harden compat runner setup

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* test: address compat review follow-ups

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* test: tighten compat case validation

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* test: require explicit compat expectations

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* test: generate missing compat snapshots

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* test: add compat dry run

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Signed-off-by: discord9 <discord9@163.com>

tests/compatibility/cases/basic_table/verify.sql

@@ -0,0 +1 @@
+SELECT ts, i, s, f FROM foo ORDER BY ts;