Fix: Allow plugin paths to be relative in webdoc.conf.json (#154)

Author: ShukantPal

.idea/codestream.xml

@@ -0,0 +1 @@
+console.log("plugin-hello-world: Hello world!");

example/plugins/plugin-hello-world.js

@@ -3,7 +3,8 @@
       "include": "./src/**/*"
   },
   "plugins": [
-    "plugins/markdown"
+    "plugins/markdown",
+    "./plugins/plugin-hello-world.js"
   ],
   "template": {
     "readme": "./README.md",

example/webdoc.conf.json

@@ -90,8 +90,17 @@ async function main(argv: yargs.Argv) {
       }
 
       // Plugin should invoke installPlugin to whatever APIs it uses.
-      // $FlowFixMe
-      require(pluginPath);
+      try {
+        // $FlowFixMe
+        require(pluginPath);
+      } catch {
+        try {
+          // $FlowFixMe
+          require(path.join(path.dirname(argv.config), pluginPath));
+        } catch {
+          log.error(tag.CLI, `Failed to resolve plugin: ${pluginPath}`);
+        }
+      }
     }
   }