add SREBOT, SHARED, TSSBOT contents (fixup for #1223)

PR #1223 only staged the deletions of the old paths because the new
top-level directories were still untracked when the commit was authored.
This commit adds the actual restructured tree: SREBOT/ (existing bot),
SHARED/ (vromfs, data_parser, ICONS/MAPS/FONTS, DAGOR_FILES,
update_game_files), and TSSBOT/ (skeleton).

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

start_bot.py

@@ -0,0 +1,14 @@
+#!/usr/bin/env python3
+"""Entry point for TSSBOT. Skeleton only."""
+import sys
+from pathlib import Path
+
+# Ensure TSSBOT root and BOTS/SHARED are importable
+_HERE = Path(__file__).resolve().parent
+_SHARED = _HERE.parent / "SHARED"
+sys.path.insert(0, str(_HERE))
+sys.path.insert(0, str(_SHARED))
+
+if __name__ == "__main__":
+    print("TSSBOT skeleton — implement BOT/botscript.py and wire it in here.")
+    sys.exit(0)