[MySQL] BinLog Processing Queue backpressure handling (#269)

Added backpressure for the MySQL binlog listener by managing the memory footprint of the binlog processing queue. 
Use specified port for MySQL connections
Use imported TS types from the powersync-mysql-zongji package.

Author: Rentacookie

.changeset/honest-ties-crash.md

@@ -0,0 +1,7 @@
+---
+'@powersync/service-module-mysql': minor
+---
+
+Added a configurable limit for the MySQL binlog processing queue to limit memory usage.
+Removed MySQL Zongji type definitions, they are now instead imported from the `@powersync/mysql-zongji` package.
+Now passing in port for the Zongji connection, so that it can be used with MySQL servers that are not running on the default port 3306.

modules/module-mysql/package.json

@@ -29,11 +29,11 @@
   },
   "dependencies": {
     "@powersync/lib-services-framework": "workspace:*",
-    "@powersync/mysql-zongji": "^0.1.0",
     "@powersync/service-core": "workspace:*",
-    "@powersync/service-jsonbig": "workspace:*",
     "@powersync/service-sync-rules": "workspace:*",
     "@powersync/service-types": "workspace:*",
+    "@powersync/service-jsonbig": "workspace:*",
+    "@powersync/mysql-zongji": "0.2.0",
     "async": "^3.2.4",
     "mysql2": "^3.11.0",
     "semver": "^7.5.4",