[REQUEST] I want to see my skunk score average over time (for a particular project)

**Before we start...:**

- [x] I checked the documentation and didn't find this feature
- [x] I checked to make sure that this feature has not already been requested

**Branch/Commit:**

In the `main` branch.

**Problem:**

Please include a detailed description of the problem this feature would solve.

> **As a skunk user**
> **I want to see the progress of my skunk score average over time**
> **So that I can track whether my project is getting better or worse ("tech debt"-wise)**

**Mockups:**

Not really a mockup but you can see a slide where I show this idea over here: https://speakerdeck.com/etagwerker/escaping-the-tar-pit-at-socrates?slide=139

**Notes:**

We will need a new page that will be a "project view" (this depends on #30) which will have to live here: `https://skunk.fastruby.io/projects/:project_name`

**I will abide by the [code of conduct] (https://github.com/fastruby/skunk.fyi/blob/main/CODE_OF_CONDUCT.md)**