If your project has source files with extensions that are not recognized by Codacy, you can configure them, allowing Codacy to include them in the next project analysis. To do this, within your project settings, click on File Extensions
Project Settings -> File Extensions
To change it, simply include the additional extensions that you want to be recognized for each language.
After clicking Save, you will be given the opportunity to retry the most recent commit with the new settings. To do this, just click on the option Analyse now that appears in the footer of the screen: