feat: add __APP_NAME__ and __APP_DISPLAY_NAME__ (#133)

### Developer Checklist (Definition of Done)

**Issue**

- [x] All acceptance criteria from the issue are met
- [x] Tested in latest Chrome/Firefox

**UI/UX/Vis**

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**Code**

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### Summary of changes

- Adds the __APP_NAME__ and __APP_DISPLAY_NAME__ properties as env
variables from the package.json

### Screenshots


### Additional notes for the reviewer(s)

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Thanks for creating this pull request 🤗

Author: puehringer

config/rspack.config.js

@@ -385,6 +385,8 @@ module.exports = (webpackEnv, argv) => {
       }),
       new DefinePlugin({
         'process.env.NODE_ENV': JSON.stringify(mode),
+        'process.env.__APP_NAME__': JSON.stringify(appPkg.name),
+        'process.env.__APP_DISPLAY_NAME__': JSON.stringify(appPkg.displayName || appPkg.name),
         'process.env.__VERSION__': JSON.stringify(appPkg.version),
         'process.env.__LICENSE__': JSON.stringify(appPkg.license),
         'process.env.__BUILD_ID__': JSON.stringify(buildId),