Polish translation added

README.md

@@ -30,6 +30,7 @@ We are accepting pull requests. Check some cool ideias.
   * [x] ~~Brazilian Portuguese~~;
   * [x] ~~French~~;
   * [x] ~~German~~;
+  * [x] ~~Polish~~;
   * [ ] _add your language_;
 * [ ] Parametrization;
   * [ ] Meeting room: Random UUID based (a new meeting room for every request) or channel based (the same meeting room for each channel);

webapp/i18n/pl_PL.json

@@ -0,0 +1,7 @@
+{
+    "mattermost_meet_plugin.header.label": "Rozpocznij spotkanie z Google Meet",
+    "mattermost_meet_plugin.message.pretext": "Rozpocząłeś spotkanie",
+    "mattermost_meet_plugin.message.title": "Google Meet",
+    "mattermost_meet_plugin.message.subtitle": "Nazwa spotkania",
+    "mattermost_meet_plugin.message.button": "DOŁĄCZ DO SPOTKANIA"
+}

webapp/src/plugin/translation.ts

@@ -2,6 +2,7 @@ import en from 'i18n/en.json';
 import pt from 'i18n/pt_BR.json';
 import fr from 'i18n/fr_FR.json';
 import de from 'i18n/de_DE.json';
+import pl from 'i18n/pl_PL.json';
 
 export const getTranslations= (locale: string) => {
     switch (locale) {
@@ -28,7 +29,11 @@ export const getTranslations= (locale: string) => {
         case 'de-LI':
             return de;
         case 'de-LU':
-            return de;
+            return de;            
+        case 'pl':
+            return pl;
+        case 'pl-PL':
+            return pl;
     }
     return en;
 }