[MSSQL] Alpha: Support replication from SQL Server / Azure SQL Database

[Rentacookie]

Introduce SQL Server / Azure SQL Database as a replication datasource

This change set enables PowerSync to listen for changes on MSSQL Databases that have Change Data Capture (CDC) enabled.

This is achieved by polling the CDC tables for updates on a regular interval and writing the changes to the bucket storage. For more details on how CDC works please see documentation:
CDC for SQL Server
CDC for Azure SQL Database

Requirements:

1. CDC enabled MSSQL database
2. _powersync_checkpoints table to allow PowerSync to generate regular updates. Table should be CDC enabled.
3. CDC enabled on all the tables PowerSync needs to replicate.
4. Database user with the following:
   • Read / Write permissions on the PowerSync checkpoints table.
   • Read permissions on the replicated tables
   • cdc_reader role which grants access to CDC tables and functions
   • VIEW SERVER PERFORMANCE STATE (SQL Server only)
   • VIEW DATABASE PERFORMANCE STATE (SQL Server and Azure SQL)

See init.sql for examples.

Self Hosted Demo available here:

• Update link when merged
  [MSSQL] Created self host demo self-host-demo#57

[changeset-bot]

🦋 Changeset detected

Latest commit: b9dd9a0

The changes in this PR will be included in the next version bump.

This PR includes changesets to release 17 packages

Name	Type
@powersync/service-core	Minor
@powersync/service-module-mssql	Minor
@powersync/service-module-postgres-storage	Patch
@powersync/service-module-mongodb-storage	Patch
@powersync/service-module-postgres	Patch
@powersync/service-errors	Patch
@powersync/service-module-mysql	Patch
@powersync/service-image	Minor
@powersync/service-core-tests	Patch
@powersync/service-module-core	Patch
@powersync/service-module-mongodb	Patch
test-client	Patch
@powersync/service-schema	Minor
@powersync/lib-services-framework	Patch
@powersync/service-rsocket-router	Patch
@powersync/lib-service-mongodb	Patch
@powersync/lib-service-postgres	Patch

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