* [Relay][VM] Support execution on devices

* Reduce Copy calls

* Cleanup

* Lint

* CR comments

* Merge test into test_vm.py

* small bug fix for DataTypeObject

* retrigger ci

* tmp

* Port vm and object to python

* clean up

* update vm build module

* update

* x

* tweak

* cleanup

* update

* fix rebase

* Rename to VMCompiler

* fix

* [Relay][VM]Compiling pattern matching

* Fix lint

* Remove debug code

* Move TreeNode definition

* merge ifi and selecti, todo: remove them

* fix lint

* remove ifi and selecti

* rename GetTagi to GetTag

* fix dltype

* fix more dltype

* Generalize If and select, and rename to Ifi and Selecti

* Fix lint

* Rename Ifi to If

* Change register default to match value

* Remove bad specialization for Move

* Stop use Select

* Remove Select

* TreeNode refactor

* Change entry_func name

* Remove Cmp due to rebase issue

* [relay][frontend] Return Module from get_workload

* pass entry_func to autotvm

* disable tune

* add property to module

* mod.entry_func to main

* .main -> mod["main"]

* fix

* Support export ADT value in Python

* Cache original functions

* Cleanup

* Cleanup

* Implement the VM compiler

* Fix issues

* Fix ASF headers

* Fix test issue

* Apply typo fixes.

* Update src/relay/backend/vm/compiler.cc

Co-Authored-By: 雾雨魔理沙 <lolisa@marisa.moe>

* Refactor compiler

* Fix

* Fix

* Fix in benchmark

* Fix

* Address comments