feat: add code for alizer npm package

.gitignore

@@ -37,3 +37,8 @@ nb-configuration.xml
 
 # Local environment
 .env
+
+# node
+lib/
+node_modules/
+.npmignore

README.md

@@ -59,6 +59,59 @@ alizer-cli-$version-runner analyze [-o json] <path>
 alizer-cli-$version-runner devfile [-o json] [-r registry-url] <path>
 ```
 
+### NPM Package
+
+Alizer also offers a NPM package providing helpers for recognize languages/frameworks in a project. It still doesn't support devfile selection.
+The syntax is the following:
+
+```
+import * as recognizer from 'language-recognizer';
+
+.....
+
+const languages = await recognizer.detectLanguages('my_project_folder');
+
+.....
+
+```
+
+### Outputs 
+
+Quarkus project output example
+
+```
+[
+  { name: 'java', builder: 'maven', frameworks: [ 'quarkus' ] },
+  { name: 'gcc machine description' }
+]
+```
+
+SpringBoot project output example
+
+```
+[
+  { name: 'java', builder: 'maven', frameworks: [ 'springboot' ] },
+  { name: 'plsql' },
+  { name: 'plpgsql' },
+  { name: 'sqlpl' },
+  { name: 'tsql' },
+  { name: 'javascript' },
+  { name: 'batchfile' },
+  { name: 'gcc machine description' }
+]
+```
+
+Django project output example
+
+```
+[
+  { name: 'python', frameworks: [ 'django' ] },
+  { name: 'gcc machine description' },
+  { name: 'shell' }
+]
+```
+
+
 Contributing
 ============
 This is an open source project open to anyone. This project welcomes contributions and suggestions!

js/package.json

@@ -0,0 +1,19 @@
+{
+  "name": "language-recognizer",
+  "version": "0.0.1",
+  "description": "",
+  "main": "lib/recognizer.js",
+  "scripts": {
+    "compile": "tsc -p ."
+  },
+  "author": "Red Hat",
+  "license": "MIT",
+  "dependencies": {
+    "@types/node": "^14.14.7",
+    "glob": "^7.1.6",
+    "js-yaml": "^3.14.0"
+  },
+  "devDependencies": {
+    "typescript": "^4.0.5"
+  }
+}