implement velocity platform

velocity/BUILD.bazel

@@ -0,0 +1,23 @@
+load("@rules_jvm_external//:defs.bzl", "artifact", "java_export")
+load("//:defs.bzl", "GROUP", "VERSION")
+
+java_export(
+    name = "velocity",
+    maven_coordinates = GROUP + ":commands-velocity:" + VERSION,
+    srcs = glob(["site/lab0x13/scrow/commands/**/*.java"]),
+    visibility = ["//visibility:public"],
+    deps = [
+        "//common:common-lib",
+        artifact("org.jetbrains:annotations"),
+        artifact("com.google.guava:guava"),
+        artifact("net.kyori:adventure-api"),
+        artifact("com.leakyabstractions:result-api"),
+        artifact("com.leakyabstractions:result"),
+        artifact("com.velocitypowered:velocity-api"),
+    ],
+    exports = [
+        "//common:common-lib",
+        artifact("com.leakyabstractions:result-api"),
+        artifact("com.leakyabstractions:result"),
+    ]
+)