[management] add gorm tag for primary key for the networks objects

[pascal-fischer]

Describe your changes

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Checklist

• Is it a bug fix
• Is a typo/documentation fix
• Is a feature enhancement
• It is a refactor
• Created tests that fail without the change (if possible)
• Extended the README / documentation, if necessary

[Copilot]

Pull Request Overview

This PR updates the Gorm tagging for network-related objects by replacing the indexing annotation with the primary key annotation on the ID fields.

• Updates the ID field in management/server/networks/types/network.go to use "primaryKey".
• Updates the ID field in management/server/networks/routers/types/router.go to use "primaryKey".
• Updates the ID field in management/server/networks/resources/types/resource.go to use "primaryKey".

Reviewed Changes

Copilot reviewed 3 out of 3 changed files in this pull request and generated no comments.

File	Description
management/server/networks/types/network.go	Changed the ID tag from an index to a primary key.
management/server/networks/routers/types/router.go	Updated the ID tag to a primary key for consistency.
management/server/networks/resources/types/resource.go	Modified the ID tag to a primary key for correct database schema.

[Copilot]

Pull Request Overview

This PR adds gorm primary key tags to various ID fields and introduces migration functions to drop unused indexes, along with corresponding test adjustments.

• Changed gorm tag on ID fields in group, network, router, and resource types to "primaryKey".
• Added migration functions to drop indexes for network, network resource, and network router.
• Updated test cases to use t.Fatalf for early test termination and adjusted SQLite store initialization to enable foreign keys.

Reviewed Changes

Copilot reviewed 9 out of 9 changed files in this pull request and generated 1 comment.

Show a summary per file

File	Description
management/server/types/group.go	Added primary key tag for Group.ID
management/server/store/store.go	Added migration functions to drop indexes for network objects
management/server/store/sql_store_test.go	Updated test failure calls and modified AccountID in tests
management/server/store/sql_store.go	Configured SQLite to enable foreign keys with PRAGMA execution
management/server/networks/types/network.go	Changed tag to primaryKey for Network.ID
management/server/networks/routers/types/router.go	Changed tag to primaryKey for NetworkRouter.ID
management/server/networks/resources/types/resource.go	Changed tag to primaryKey for NetworkResource.ID
management/server/migration/migration_test.go	Added tests for the new DropIndex migration function
management/server/migration/migration.go	Added a generic DropIndex migration function

[sonarqubecloud]

Quality Gate passed

Issues
0 New issues
0 Accepted issues

Measures
0 Security Hotspots
0.0% Coverage on New Code
0.0% Duplication on New Code

See analysis details on SonarQube Cloud