Docs update (#309)

* add initial prototype of self managed worker resource and associated tests

* Add self managed worker resource and associated tests

* Update internal/provider/resource_self_managed_worker.go

Accept suggested schema changes for tags

Co-authored-by: Johan Brandhorst-Satzkorn <johan.brandhorst@gmail.com>

* add environment variable check for worker led auth testing

* change resource name from self_managed_worker to worker for consistency with the api

* update tag schemas, ensure all attributes have descriptions

* add generated docs for worker

* add examples for worker resource

* add examples for worker resource

* remove merge conflict

* Remove funtionality for reflecting tags in the schema

* remove unused attributes (all tags) from schema, updates tests to use 'boundary_worker' on resource checks

* update example for inclusion in the website docs

---------

Co-authored-by: Johan Brandhorst-Satzkorn <johan.brandhorst@gmail.com>

examples/resources/boundary_worker/resource.tf

@@ -0,0 +1,12 @@
+resource "boundary_worker" "controller_led" {
+	scope_id = "global"
+	name = "worker 1"
+	description = "self managed worker with controller led auth"
+}
+
+resource "boundary_self_managed_worker" "worker_led" {
+	scope_id = "global"
+	name = "worker 2"
+	description = "self managed worker with worker led auth"
+	worker_generated_auth_token = var.worker_generated_auth_token
+}