Auto merge of #14816 - justahero:gh-14626, r=Veykril

feat: Assist to replace generic with impl trait

This adds a new assist named "Replace named generic with impl". It is the inverse operation to the existing "Replace impl trait with generic" assist.

It allows to refactor the following statement:

```rust
//      👇 cursor
fn new<T$0: ToString>(input: T) -> Self {}
```

to be transformed into:

```rust
fn new(input: impl ToString) -> Self {}
```

* adds new helper function `impl_trait_type` to create AST node
* add method to remove an existing generic param type from param list

Closes #14626

0 files changed, 0 insertions, 0 deletions