feat(PPO_Bot): command abstraction layer — goto/aimTo controllers (#24)

- Add gotoTick/aimToTick controller functions (#25)
- Update network dims: actor 5→6, state 42→44 (#26)
- Rewrite mapActions for 6-dim command space (#27)
- Delete stale weight files (shape mismatch)
- Fix existing tests for new signatures

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

GotoTest/GotoTest.json

@@ -0,0 +1,11 @@
+{
+  "name": "GotoTest",
+  "version": "0.1.0",
+  "authors": ["Davide Cappellini"],
+  "description": "Throwaway goto(x,y) controller prototype",
+  "homepage": "",
+  "countryCodes": ["IT"],
+  "gameTypes": ["classic", "melee", "1v1"],
+  "platform": "Nim",
+  "programmingLang": "Nim"
+}