2946 feature request integrate file selector with google drive and onedrive (#3253)

# Description of Changes

Please provide a summary of the changes, including:
- Why the change was made
- Any challenges encountered


- Added google drive integration config to premium settings in
setting.yml
- Added google drive button to file picker when enabled 
- Picker appears and allows users to load pdfs and other files into the
tools


Closes #(2946)

---

### Documentation
[Docs Update
PR](https://github.com/Stirling-Tools/Stirling-Tools.github.io/pull/67)

---------

Co-authored-by: Anthony Stirling <77850077+Frooodle@users.noreply.github.com>

src/main/java/stirling/software/SPDF/model/ApplicationProperties.java

@@ -430,6 +430,7 @@ public class ApplicationProperties {
         public static class ProFeatures {
             private boolean ssoAutoLogin;
             private CustomMetadata customMetadata = new CustomMetadata();
+            private GoogleDrive googleDrive = new GoogleDrive();
 
             @Data
             public static class CustomMetadata {
@@ -448,6 +449,26 @@ public class ApplicationProperties {
                             : producer;
                 }
             }
+
+            @Data
+            public static class GoogleDrive {
+                private boolean enabled;
+                private String clientId;
+                private String apiKey;
+                private String appId;
+
+                public String getClientId() {
+                    return clientId == null || clientId.trim().isEmpty() ? "" : clientId;
+                }
+
+                public String getApiKey() {
+                    return apiKey == null || apiKey.trim().isEmpty() ? "" : apiKey;
+                }
+
+                public String getAppId() {
+                    return appId == null || appId.trim().isEmpty() ? "" : appId;
+                }
+            }
         }
 
         @Data