- Add `make::untyped_param`
- Add some basic make tests
Example
---
```rust
make::unnamed_param(make::ty("Vec<T>")),
```
**Before this PR**
```text
PARAM@0..4
  IDENT_PAT@0..4
    NAME@0..4
      IDENT@0..4 "Vec"
```
**After this PR**
```text
PARAM@0..6
  PATH_TYPE@0..6
    PATH@0..6
      PATH_SEGMENT@0..6
        NAME_REF@0..3
          IDENT@0..3 "Vec"
        GENERIC_ARG_LIST@3..6
          L_ANGLE@3..4 "<"
          TYPE_ARG@4..5
            PATH_TYPE@4..5
              PATH@4..5
                PATH_SEGMENT@4..5
                  NAME_REF@4..5
                    IDENT@4..5 "T"
          R_ANGLE@5..6 ">"
```
---
Assist: `Generate a type alias for function with unnamed params`
```rust
fn foo$0(x: Vec<i32>) {}
```
**Before this PR**
```rust
type FooFn = fn(Vec);
fn foo(x: Vec<i32>) {}
```
**After this PR**
```rust
type FooFn = fn(Vec<i32>);
fn foo(x: Vec<i32>) {}
```