fix: add support windows

Author: alexander popov

mamonsu/plugins/pgsql/__init__.py

@@ -1,3 +1,5 @@
+import mamonsu.lib.platform as platform
+
 __all__ = ['bgwriter', 'connections', 'databases']
 __all__ += ['health', 'instance', 'xlog']
 __all__ += ['pg_stat_statement', 'pg_buffercache', 'pg_wait_sampling']
@@ -6,6 +8,8 @@
 __all__ += ['archive_command']
 __all__ += ['prepared_transaction']
 __all__ += ['relations_size']
-__all__ += ['memory_leak_diagnostic']
+
+if platform.LINUX:
+    __all__ += ['memory_leak_diagnostic']
 
 from . import *