this command add new task to task list
use -t | --title for Set TASK Title
use -p | --priority for Set TASK Priority (default: L)
./todo.sh add -t "TASK Title" -p "TASK Priority (H|M|L)"
this command show task list
./todo.sh list
this command clear task list
./todo.sh clear
This command lists tasks that have "search Title" in their title
./todo.sh find "search Title"
This command done task by task ID
./todo.sh done [Task ID]