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/release-simulator.sh

@@ -9,9 +9,9 @@
 build_path=$1
 target_path=$2
 
-mkdir -p $target_path
+mkdir -p "$target_path"
 
-cp version.txt $target_path
-cp $build_path/Firmware/FirmwareSim $target_path/
-cp -r Data/data $target_path/
-cp -r Data/system $target_path/
+cp version.txt "$target_path"
+cp "$build_path/Tactility/Tactility" "$target_path/"
+cp -r Data/data "$target_path/"
+cp -r Data/system "$target_path/"