Simple try-catch assertion migrations

It should be feasible to match simple try-catch assertions like:

```java
try {
  [codeblock]
  fail("this message doesn't really matter")
} catch(SomeException e) {
  // Some assert on the exception
}
```

This can be converted to:

```java
assertThatThrownBy(() -> {
  [codeblock]
}).isInstanceOf(SomeException.class) // Chain other assertions
```
