refactor: convert some old queries to .txtcase (#137)

## What's Changed

Consolidate some of the old test cases.

Author: lidavidm

adbc_drivers_validation/queries/type/bind/timestamp_ms.bind.json

@@ -0,0 +1,83 @@
+// Copyright (c) 2025 ADBC Drivers Contributors
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//         http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+// part: metadata
+
+[setup]
+drop = "test_timestamp"
+
+[tags]
+sql-type-name = "TIMESTAMP"
+
+// part: setup_query
+
+CREATE TABLE test_timestamp (
+    idx INT,
+    res TIMESTAMP(3)
+);
+
+// part: bind_query
+
+INSERT INTO test_timestamp VALUES ($1, $2)
+
+// part: bind_schema
+
+{
+    "format": "+s",
+    "children": [
+        {
+            "name": "idx",
+            "format": "i",
+            "flags": []
+        },
+        {
+            "name": "res",
+            "format": "tsm:",
+            "flags": ["nullable"]
+        }
+    ]
+}
+
+// part: bind
+
+{"idx": 3, "res": 1684158330123}
+{"idx": 2, "res": 946684800123}
+{"idx": 1, "res": -62135596800000}
+{"idx": 4, "res": 253402300799999}
+{"idx": 0, "res": null}
+
+// part: query
+
+SELECT res FROM test_timestamp ORDER BY idx
+
+// part: expected_schema
+
+{
+    "format": "+s",
+    "children": [
+        {
+            "name": "res",
+            "format": "tsm:",
+            "flags": ["nullable"]
+        }
+    ]
+}
+
+// part: expected
+
+{"res": null}
+{"res": -62135596800000}
+{"res": 946684800123}
+{"res": 1684158330123}
+{"res": 253402300799999}