First development of the deploy action (#6)

Deploy js code to an instance of screeps.
Some debugging tools are implemented.

Reviewed-on: #6
Co-authored-by: Philipp Horstenkamp <philipp@horstenkamp.de>
Co-committed-by: Philipp Horstenkamp <philipp@horstenkamp.de>

node_modules/undici/lib/pool-stats.js

@@ -0,0 +1,34 @@
+const { kFree, kConnected, kPending, kQueued, kRunning, kSize } = require('./core/symbols')
+const kPool = Symbol('pool')
+
+class PoolStats {
+  constructor (pool) {
+    this[kPool] = pool
+  }
+
+  get connected () {
+    return this[kPool][kConnected]
+  }
+
+  get free () {
+    return this[kPool][kFree]
+  }
+
+  get pending () {
+    return this[kPool][kPending]
+  }
+
+  get queued () {
+    return this[kPool][kQueued]
+  }
+
+  get running () {
+    return this[kPool][kRunning]
+  }
+
+  get size () {
+    return this[kPool][kSize]
+  }
+}
+
+module.exports = PoolStats