docs: update PHPDoc for tenant() and domains() methods to include full model type hints

Author: MrPunyapal

src/Database/Concerns/BelongsToTenant.php

@@ -18,7 +18,7 @@ trait BelongsToTenant
     use FillsCurrentTenant;
 
     /**
-     * @return BelongsTo<\Stancl\Tenancy\Contracts\Tenant, $this>
+     * @return BelongsTo<\Illuminate\Database\Eloquent\Model&\Stancl\Tenancy\Contracts\Tenant, $this>
      */
     public function tenant(): BelongsTo
     {

src/Database/Concerns/HasDomains.php

@@ -4,6 +4,7 @@
 
 namespace Stancl\Tenancy\Database\Concerns;
 
+use Illuminate\Database\Eloquent\Relations\HasMany;
 use Stancl\Tenancy\Contracts\Domain;
 use Stancl\Tenancy\Tenancy;
 
@@ -15,9 +16,9 @@
 trait HasDomains
 {
     /**
-     * @return \Illuminate\Database\Eloquent\Relations\HasMany<Domain, $this>
+     * @return HasMany<\Illuminate\Database\Eloquent\Model&\Stancl\Tenancy\Contracts\Domain, $this>
      */
-    public function domains()
+    public function domains(): HasMany
     {
         return $this->hasMany(config('tenancy.models.domain'), Tenancy::tenantKeyColumn());
     }

src/ResourceSyncing/ResourceSyncing.php

@@ -106,7 +106,7 @@ public function shouldSync(): bool
     }
 
     /**
-     * @return BelongsToMany<\Stancl\Tenancy\Database\Contracts\TenantWithDatabase, $this>
+     * @return BelongsToMany<\Illuminate\Database\Eloquent\Model&\Stancl\Tenancy\Database\Contracts\TenantWithDatabase, $this>
      */
     public function tenants(): BelongsToMany
     {