Add drone telemetry Lua decoder examples and test data generator

Ultraworked with [Sisyphus](https://github.com/code-yeongyu/oh-my-openagent)

Co-authored-by: Sisyphus <clio-agent@sisyphuslabs.ai>

examples/drone_plot.lua

@@ -0,0 +1,16 @@
+return {
+    decode = function(frame)
+        if #frame == 0 then return nil end
+
+        local gyro_str = frame:match("Gyro:([%d%.%-]+),([%d%.%-]+),([%d%.%-]+)")
+        if not gyro_str then return nil end
+
+        local gz, gy, gx = frame:match("Gyro:([%d%.%-]+),([%d%.%-]+),([%d%.%-]+)")
+        return {
+            kind = "plot",
+            channels = { { tonumber(gz) }, { tonumber(gy) }, { tonumber(gx) } },
+            sample_type = "F64",
+            format = "Block",
+        }
+    end,
+}