personal/q3k: add minecraft plugins

Also drive-by modify WORKSPACE to add required deps.

Also drive-by update deps in WORKSPACE.

Also drive-by remove old stackb/proto library from WORKSPACE (only used
in cccampix, which is dead, and stackb/proto should be replaceable by
the main grpc lib by this point).

Change-Id: I7ac7fe2237e859dc1c45bf41a016174ed8e9ee71
diff --git a/personal/q3k/minecraft/plugin/BUILD b/personal/q3k/minecraft/plugin/BUILD
new file mode 100644
index 0000000..ac8e49f
--- /dev/null
+++ b/personal/q3k/minecraft/plugin/BUILD
@@ -0,0 +1,14 @@
+load("@io_bazel_rules_go//go:def.bzl", "go_binary", "go_library")
+
+go_library(
+    name = "go_default_library",
+    srcs = ["genpluginyml.go"],
+    importpath = "code.hackerspace.pl/personal/q3k/minecraft/plugins/genpluginyml",
+    visibility = ["//visibility:private"],
+)
+
+go_binary(
+    name = "genpluginyml",
+    embed = [":go_default_library"],
+    visibility = ["//visibility:public"],
+)