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.

Modules/http-module/CMakeLists.txt

@@ -11,6 +11,9 @@ list(APPEND REQUIRES_LIST
 if (DEFINED ENV{ESP_IDF_VERSION})
     list(APPEND REQUIRES_LIST
         esp_http_client
+        esp_netif
+        lwip
+        mbedtls
     )
     list(FILTER SOURCE_FILES EXCLUDE REGEX ".*download_mock\\.cpp$")
 else ()