feat: When using `mason add --path` (or other file references), infer the name of the package

**Description**

When I have a local brick at `package/bricks/dart_package` I would like `mason add` to infer the name of the brick with out specifying (where possible).

If I run
```
mason add --path package/bricks/dart_package
```
The error appears:
```
brick name is required.
```
Correct command (now):
```
mason add --path package/bricks/dart_package dart_package
```
But I would like `mason` to infer the brick name since it's already available at that path.

**Requirements**

- [ ] `mason add --path path/to/my_brick` infers brick name `my_brick`

**Additional Context**

The other `mason add` options might also benefit from this feature. `mason add some_brick` that uses the mason_api is the only one that would likely require the brick name.