Remove TactilityC and Firmware subprojects (#638)

- Removed TactilityC, moved its symbols to existing modules and several new ones (pthread-module, c-symbols-module, cpp-symbols-module, posix-symbols-module, freertos-module).
- Removed Firmware subproject and moved main() into Tactility subproject.
- Strengthened application archive, path, version, stack-size, and device validation.
- Moved symbol resolution for elf_loader to app-esp32-module.
- Improved `struct Module` declarations and made module and symbol definitions in modules more consistent.
- Removed old http download code from Tactility subproject.
- Rename app-module's source files for consistency.
- Add missing pthread symbols.
- Kernel module symbols are now resolvable on all platforms.

Buildscripts/build-all.py

@@ -5,7 +5,6 @@ import time
 
 def build(device: str) -> bool:
     print(f"Building {device}...")
-    shutil.rmtree(os.path.join('Firmware', 'Generated'), ignore_errors=True)
     result = subprocess.run(['python', 'device.py', device], capture_output=True, text=True)
     if result.returncode != 0:
         print(f"Failed to select device {device}")