fix(angular): add package description (open-feature#1026)

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## This PR
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- adds package.json description

Signed-off-by: Lukas Reining <[email protected]>

Author: lukas-reining

packages/angular/projects/angular-sdk/package.json

@@ -1,6 +1,7 @@
 {
   "name": "@openfeature/angular-sdk",
   "version": "0.0.3-experimental",
+  "description": "OpenFeature Angular SDK",
   "scripts": {
     "current-published-version": "npm show $npm_package_name@$npm_package_version version",
     "current-version": "echo $npm_package_version",