Expose Path to jar file in PluginProviderContext (#9030)

* Expose Path to jar file in PluginProviderContext

* rename accessor, reword jd

patches/api/Paper-Plugins.patch

@@ -290,6 +290,14 @@ index 0000000000000000000000000000000000000000..00000000000000000000000000000000
 +    @NotNull
 +    ComponentLogger getLogger();
 +
++    /**
++     * Provides the path to the originating source of the plugin, such as the plugin's JAR file.
++     *
++     * @return the previously described path
++     */
++    @NotNull
++    Path getPluginSource();
++
 +}
 diff --git a/src/main/java/io/papermc/paper/plugin/configuration/PluginMeta.java b/src/main/java/io/papermc/paper/plugin/configuration/PluginMeta.java
 new file mode 100644