See this listing
If you just want to install the loader into a existing Ghidra installation:
NOTE: Current eclipse project extension debugging is not working after the update to Ghidra 9.2 with error:
OpenJDK 64-Bit Server VM warning: Archived non-system classes are disabled because the java.system.class.loader property is specified (value = "ghidra.GhidraClassLoader"). To use archived non-system classes, this property must not be set. Builds are working but must be tested manually. If you have a solution for this or a way to rebuild the project you are more than welcome to create a pull request!
Provided is an Eclipse project to debug and build the loader. You must have a Ghidra installation as well as the Ghidra Eclipse extension.
To export a build of the project in Eclipse select File > Export and then choose Ghidra > Ghidra Module Extension. You can then use a local Gradle installation or an online build.
For reference and tutorials about Ghidra loaders and how to write them, you may want to read: