Make AYON loader plug-in host specific using `LoaderPlugin.is_compatible_loader` classmethod

ayon_loader_plugin_host_specific.py

from ayon_core.pipeline import load, get_current_host_name


class TestHostSpecificLoad(load.LoaderPlugin):
    hosts = ["bla"]
    product_types = {"*"}
    representations = {"*"}

    label = "Test Host Specific Load"

    @classmethod
    def is_compatible_loader(cls, context):
        return get_current_host_name() in cls.hosts


# Alternative
class SingleHostEnabledLoad(load.LoaderPlugin):
    enabled = get_current_host_name() == "my_host"
    product_types = {"*"}
    representations = {"*"}

    label = "Single Host Enabled Load"