feat: Extension Resources Group Ownership (#276)

* feat: add owner_id to system_extension_resources and implement ownership checks

- Added owner_id column to system_extension_resources table with foreign key reference to groups.
- Updated Group model to include relationships for OwnerSystemExtensionResources.
- Implemented methods for managing ownership of system extension resources in Group and SystemExtensionResource models.
- Enhanced authorization middleware to check for resource ownership based on the new owner_id field.
- Refactored createSystemExtensionResource to handle owner assignment and validation.
- Updated tests to cover new ownership logic and ensure correct error handling for scope violations.

Signed-off-by: Bailin He <bahe@equinix.com>

* feat: add resource_version to system_extension_resources and update related logic

Signed-off-by: Bailin He <bahe@equinix.com>

* feat: implement extension resource management with ownership and versioning

Signed-off-by: Bailin He <bahe@equinix.com>

* feat: refactor extension resource management to support new routing and ownership features
- Updated routes for creating and updating extension resources to remove URI parameters.
- Implemented ownership checks and resource versioning in extension resource creation and update logic.
- Enhanced test cases to reflect changes in API structure and validation.

Signed-off-by: Bailin He <bahe@equinix.com>

* feat: add create and update request schemas for extension resources and update related paths

Signed-off-by: Bailin He <bahe@equinix.com>

* rename functions

Signed-off-by: Bailin He <bahe@equinix.com>

* feat: add Create and Update methods for extension resources with error handling

Signed-off-by: Bailin He <bahe@equinix.com>

* Apply suggestions from code review

Co-authored-by: Copilot <175728472+Copilot@users.noreply.github.com>

* feat: enhance request body handling in middleware for extension resource authorization

Signed-off-by: Bailin He <bahe@equinix.com>

* refactor: rename tracing span for create and update system extension resource functions

Signed-off-by: Bailin He <bahe@equinix.com>

* feat: improve request body handling in middleware for extension resource retrieval

Signed-off-by: Bailin He <bahe@equinix.com>

---------

Signed-off-by: Bailin He <bahe@equinix.com>
Co-authored-by: Copilot <175728472+Copilot@users.noreply.github.com>

Author: bailinhe

db/psql/migrations/00003_extension_resource_owners.sql

@@ -0,0 +1,19 @@
+-- +goose Up
+-- +goose StatementBegin
+
+ALTER TABLE system_extension_resources
+  ADD COLUMN owner_id UUID REFERENCES groups(id) ON DELETE SET NULL,
+  ADD COLUMN resource_version BIGINT NOT NULL DEFAULT 1,
+  ADD COLUMN messages JSONB[] NOT NULL DEFAULT ARRAY['{}'::JSONB]::JSONB[]
+;
+
+-- +goose StatementEnd
+
+-- +goose Down
+-- +goose StatementBegin
+
+ALTER TABLE system_extension_resources DROP COLUMN IF EXISTS messages;
+ALTER TABLE system_extension_resources DROP COLUMN IF EXISTS resource_version;
+ALTER TABLE system_extension_resources DROP COLUMN IF EXISTS owner_id;
+
+-- +goose StatementEnd