Add project configuration and build tools

- Introduced new scripts for project generation and synthesis (dodo.py, generate_prj.py, generate_scr.py, run_xst.py).
- Implemented configuration parsing for VHDL sources and project settings (config.py).
- Added default configuration values (defaults.py).
- Updated .gitignore to include additional file types.
- Created test cases for project generation and configuration parsing (test_generate_prj.py, test_generate_scr.py, test_project_cfg.py).

tools/paths.py

@@ -0,0 +1,21 @@
+import os
+from pathlib import Path
+import sys
+
+# Ermittle absoluten Pfad dieser Datei
+HERE = Path(__file__).resolve()
+
+# Gehe zurück von tools/ → build/ → Projekt-Root
+ROOT = HERE.parent.parent.parent
+
+# Abgeleitete Pfade
+BUILD = ROOT / "build"
+WORKING = BUILD / "working"
+REPORTS = BUILD / "reports"
+
+# Relativer Pfad von WORKING zurück zur Projektwurzel
+REL_FROM_WORKING_TO_ROOT = Path(os.path.relpath(ROOT, WORKING))
+
+# Standard-Konfigurationsdateien
+PROJECT_CFG = ROOT / "project.cfg"
+VHDL_LS_TOML = ROOT / "vhdl_ls.toml"