PostgreSQL for Bjolang: bjosql over Npgsql, for bjoroutines

Every operation suspends its fiber while it waits for the server, and
the ambient cancellation token cancels the query. A Db is a pool; a
transaction holds one connection and hands its function a Db bound to
it, and a nested one is a savepoint. Each SqlValue is a typed parameter,
and a value is read back by the PostgreSQL type of its column. The
server's errors are DbError with its SQLSTATE, and a lost connection is
DbError 08000.

🤖 Generated with [ECA](https://eca.dev)

Co-Authored-By: eca-agent <git@eca.dev>

packages.lock.json

@@ -0,0 +1,29 @@
+{
+  "version": 1,
+  "dependencies": {
+    "net10.0": {
+      "Npgsql": {
+        "type": "Direct",
+        "requested": "[10.0.0, )",
+        "resolved": "10.0.0",
+        "contentHash": "xZAYhPOU2rUIFpV48xsqhCx9vXs6Y+0jX2LCoSEfDFYMw9jtAOUk3iQsCnDLrFIv9NT3JGMihn7nnuZsPKqJmA==",
+        "dependencies": {
+          "Microsoft.Extensions.Logging.Abstractions": "10.0.0"
+        }
+      },
+      "Microsoft.Extensions.DependencyInjection.Abstractions": {
+        "type": "Transitive",
+        "resolved": "10.0.0",
+        "contentHash": "L3AdmZ1WOK4XXT5YFPEwyt0ep6l8lGIPs7F5OOBZc77Zqeo01Of7XXICy47628sdVl0v/owxYJTe86DTgFwKCA=="
+      },
+      "Microsoft.Extensions.Logging.Abstractions": {
+        "type": "Transitive",
+        "resolved": "10.0.0",
+        "contentHash": "FU/IfjDfwaMuKr414SSQNTIti/69bHEMb+QKrskRb26oVqpx3lNFXMjs/RC9ZUuhBhcwDM2BwOgoMw+PZ+beqQ==",
+        "dependencies": {
+          "Microsoft.Extensions.DependencyInjection.Abstractions": "10.0.0"
+        }
+      }
+    }
+  }
+}