Enable task canonicalization pass in task flow dialect

[ShangkunLi]

In this pr:

• fix some bugs in convert-affine-to-taskflow and construct-hyperblock-from-task passes
• create a new pass called canonicalize-task in taskflow dialect

This new canonicalization pass outputs the canonicalized task. There is only one hyperblock in each task and its corresponding counters.

Based on the canonicalized task graph, we can further perform task fusion/fission and resource binding.

The next step is to:

1. Determine the design of our affine controller
2. Enable mapping a task on a CGRA