Feat: Support macOS and Windows, migrate JavaScript to TypeScript (#32)

- Support macOS and Windows (Close #24 )
- Refactoring
  - Error handling
  - TypeScript
- Prettier (Close #29 )
- GHA: Add upload-artifact step for test coverage
- deps: Install husky

src/installer.ts

@@ -0,0 +1,42 @@
+import * as core from '@actions/core';
+import * as tc from '@actions/tool-cache';
+import * as io from '@actions/io';
+import getOS from './get-os';
+import getURL from './get-url';
+
+export default async function installer(version: string) {
+  try {
+    const extended: string = core.getInput('extended');
+    console.log(`Hugo extended: ${extended}`);
+
+    const osName: string = getOS(process.platform);
+    console.log(`Operating System: ${osName}`);
+
+    const hugoURL: string = getURL(osName, extended, version);
+    core.debug(`hugoURL: ${hugoURL}`);
+
+    const hugoPath: string = `${process.env.HOME}/bin`;
+    await io.mkdirP(hugoPath);
+    core.addPath(hugoPath);
+
+    // Download and extract Hugo binary
+    const hugoAssets: string = await tc.downloadTool(hugoURL);
+    let hugoBin: string = '';
+    if (osName === 'Windows') {
+      const hugoExtractedFolder: string = await tc.extractZip(
+        hugoAssets,
+        '/tmp'
+      );
+      hugoBin = `${hugoExtractedFolder}/hugo.exe`;
+    } else {
+      const hugoExtractedFolder: string = await tc.extractTar(
+        hugoAssets,
+        '/tmp'
+      );
+      hugoBin = `${hugoExtractedFolder}/hugo`;
+    }
+    await io.mv(hugoBin, hugoPath);
+  } catch (error) {
+    core.setFailed(error.message);
+  }
+}