[New Resource]: aws_finspace_kx_cluster (#31806)

* Adds finspace_kx_cluster resource

* Formatting fixes to cluster

* Formatting fixes for kx cluster

* Formatting fixes for kx cluster tests and docs

* Update kx_cluster_test.go

* Update finspace_kx_cluster.html.markdown

* Resolve merge conflicts

* Ran generate.go

* chore: changelog

* r/aws_finspace_kx_cluster: alphabetize attributes

* r/aws_finspace_kx_cluster: crud handlers return diags

* r/aws_finspace_kx_cluster: allow tag only updates

* r/aws_finspace_kx_cluster: find by id to support import

* r/aws_finspace_kx_cluster: import support

* r/aws_finspace_kx_cluster(docs): use standard tags/tags_all descriptions

* r/aws_finspace_kx_cluster(docs): alphabetize

* r/aws_finspace_kx_cluster(test): add ctx to check funcs

* r/aws_finspace_kx_cluster(test): add base config

* r/aws_finspace_kx_cluster(lint): unconvert

* r/aws_finspace_kx_cluster(test): tags update

* r/aws_finspace_kx_cluster(lint): avoid hardcoded partition

* Add code.zip for customer code tests

* Minor fix to set id

* r/aws_finspace_kx_cluster: use environment id from resource id on read

* r/aws_finspace_kx_cluster: no force new on tag updates

* Set environment id in read function

---------

Co-authored-by: Jared Baker <jared.baker@hashicorp.com>

.changelog/31806.txt

@@ -0,0 +1,3 @@
+```release-note:new-resource
+aws_finspace_kx_cluster
+```