Initial tests set up (#10)

* Begin debugging

* Initial tests set up

This adds tests using uvu (we can switch if people want) and restructures things a bit so that it's easier to test.

Like in snowpack you set up a little project. In our tests you can say:

```js
const result = await runtime.load('/blog/hello-world')
```

And analyze the result. I included a `test-helpers.js` which has a function that will turn HTML into a cheerio instance, for inspecting the result HTML.

* Add CI

* Remove extra console logs

* Formatting

1 files changed, 22 insertions, 0 deletions

diff --git a/src/config.ts b/src/config.ts
new file mode 100644
index 000000000..da58b7a03
--- /dev/null
+++ b/src/config.ts
@@ -0,0 +1,22 @@
+import type { AstroConfig } from './@types/astro';
+import { join as pathJoin, resolve as pathResolve } from 'path';
+import { existsSync } from 'fs';
+
+export async function loadConfig(rawRoot: string | undefined): Promise<AstroConfig | undefined> {
+  if (typeof rawRoot === 'undefined') {
+    rawRoot = process.cwd();
+  }
+
+  const root = pathResolve(rawRoot);
+  const fileProtocolRoot = `file://${root}/`;
+  const astroConfigPath = pathJoin(root, 'astro.config.mjs');
+
+  if (!existsSync(astroConfigPath)) {
+    return undefined;
+  }
+
+  const astroConfig: AstroConfig = (await import(astroConfigPath)).default;
+  astroConfig.projectRoot = new URL(astroConfig.projectRoot + '/', fileProtocolRoot);
+  astroConfig.hmxRoot = new URL(astroConfig.hmxRoot + '/', fileProtocolRoot);
+  return astroConfig;
+}