feat: mssql alpha instance (#2)

* fix: remove unused attribute types and functions from backup models

* fix: update API client references to use sqlserverflexalpha package

* fix: update package references to use sqlserverflexalpha and modify user data source model

* fix: add sqlserverflexalpha user data source to provider

* fix: add sqlserverflexalpha user resource and update related functionality

* chore: add stackit_sqlserverflexalpha_user resource and instance_id variable

* fix: refactor sqlserverflexalpha user resource and enhance schema with status and default_database

---------

Co-authored-by: Andre Harms <andre.harms@stackit.cloud>
Co-authored-by: Marcel S. Henselin <marcel.henselin@stackit.cloud>

scripts/check-docs.sh

@@ -1,4 +1,6 @@
 #!/usr/bin/env bash
+# Copyright (c) STACKIT
+
 
 # This script is used to ensure for PRs the docs are up-to-date via the CI pipeline
 # Usage: ./check-docs.sh

scripts/lint-golangci-lint.sh

@@ -1,4 +1,6 @@
 #!/usr/bin/env bash
+# Copyright (c) STACKIT
+
 # This script lints the SDK modules and the internal examples
 # Pre-requisites: golangci-lint
 set -eo pipefail

scripts/project.sh

@@ -1,4 +1,6 @@
 #!/usr/bin/env bash
+# Copyright (c) STACKIT
+
 
 # This script is used to manage the project, only used for installing the required tools for now
 # Usage: ./project.sh [action]

scripts/replace.sh

@@ -1,4 +1,6 @@
 #!/usr/bin/env bash
+# Copyright (c) STACKIT
+
 # Add replace directives to local files to go.work
 set -eo pipefail
 

scripts/tfplugindocs.sh

@@ -1,10 +1,12 @@
 #!/usr/bin/env bash
+# Copyright (c) STACKIT
+
 # Pre-requisites: tfplugindocs
 set -eo pipefail
 
 ROOT_DIR=$(git rev-parse --show-toplevel)
 EXAMPLES_DIR="${ROOT_DIR}/examples"
-PROVIDER_NAME="stackit"
+PROVIDER_NAME="stackitprivatepreview"
 
 # Create a new empty directory for the docs
 if [ -d ${ROOT_DIR}/docs ]; then
@@ -14,4 +16,4 @@ mkdir -p ${ROOT_DIR}/docs
 
 echo ">> Generating documentation"
 tfplugindocs generate \
-    --provider-name "stackit"
+    --provider-name "stackitprivatepreview"