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.

Tactility/Include/Tactility/network/Http.h

@@ -1,24 +0,0 @@
-#pragma once
-
-#include <string>
-#include <functional>
-
-namespace tt::network::http {
-    /**
-     * Download a file from a URL.
-     * The server must send the Content-Length header.
-     * @param url download source URL
-     * @param certFilePath the path to the .pem file
-     * @param downloadFilePath The path to downloadd the file to. The parent directories must exist.
-     * @param onSuccess the success result callback
-     * @param onError the error result callback
-     */
-    void download(
-    const std::string& url,
-    const std::string& certFilePath,
-    const std::string &downloadFilePath,
-    const std::function<void()>& onSuccess,
-    const std::function<void(const char* errorMessage)>& onError
-);
-
-}