Remove `context.TODO()`

https://github.com/search?q=repo%3Alima-vm%2Flima%20context.TODO&type=code

A `context.Context` should be passed as a function argument

e.g.,
```go
func Foo(){
  ctx := context.TODO()
  ...
}
```
↓

```go
func Foo(ctx context.Context) {
  ...
}
```