add data packages and remove empty submodule

packages/data/tst/Cargo.toml

@@ -0,0 +1,30 @@
+[package]
+name = "tst"
+version = "0.1.0"
+edition = "2021"
+description = "A persistent ternary search tree implementation using OurDB for storage"
+authors = ["OurWorld Team"]
+
+[dependencies]
+ourdb = { path = "../ourdb" }
+thiserror = "1.0.40"
+
+[dev-dependencies]
+# criterion = "0.5.1"
+
+# Uncomment when benchmarks are implemented
+# [[bench]]
+# name = "tst_benchmarks"
+# harness = false
+
+[[example]]
+name = "basic_usage"
+path = "examples/basic_usage.rs"
+
+[[example]]
+name = "prefix_ops"
+path = "examples/prefix_ops.rs"
+
+[[example]]
+name = "performance"
+path = "examples/performance.rs"