debug(ci): add lock/lsm test to isolate failure

tests/test_lock.nim

@@ -0,0 +1,17 @@
+import std/unittest
+import std/locks
+import barabadb/storage/lsm
+
+suite "Lock test":
+  test "initLock works":
+    var l: Lock
+    initLock(l)
+    acquire(l)
+    release(l)
+    check true
+
+  test "newLSMTree works":
+    var db = newLSMTree("/tmp/test_lock_lsm")
+    check db != nil
+    db.put("key1", @[1'u8, 2'u8])
+    check true