[DATA] Add Data Plugin for importing CSV data to view in MCT

Data plugin can import dictionary and data files. Users can then use MCT to view the data.

Wrote or re-wrote unit tests (Y/N): N
 Ran entire suite of unit tests successfully (Y/N): N
 Verified bug fix with the described replication steps or verified the implementation meets the requirement cited (Y/N): N
 Code coverage requirements satisfied (new code=80%, changed code=at least as high as existing) (Y/N): Y
 Code review date and attendees: Code review by pull request
 Describe potential impact on other areas of the code: NA
 Describe any test prerequisites for this fix (e.g., restart the database): NA
 For bugs marked "Regression - Yes", describe the cause of the regression: 
 Did you modify any pom.xml file? If yes, did you thoroughly document your changes and reasons? N

This debug output should be removed to minimize console noise.