feat: refactor resource schema handling and add plan modifiers configuration

stackit/internal/services/sqlserverflexbeta/database/planModifiers.yaml

@@ -0,0 +1,50 @@
+fields:
+  - name: 'id'
+    modifiers:
+      - 'UseStateForUnknown'
+
+  - name: 'instance_id'
+    validators:
+      - validate.NoSeparator
+      - validate.UUID
+    modifiers:
+      - 'RequiresReplace'
+
+  - name: 'project_id'
+    validators:
+      - validate.NoSeparator
+      - validate.UUID
+    modifiers:
+      - 'RequiresReplace'
+
+  - name: 'region'
+    modifiers:
+      - 'RequiresReplace'
+
+  - name: 'name'
+    modifiers:
+      - 'RequiresReplace'
+
+  - name: 'collation'
+    modifiers:
+      - 'RequiresReplace'
+
+  - name: 'owner'
+    modifiers:
+      - 'RequiresReplace'
+
+  - name: 'database_name'
+    modifiers:
+      - 'UseStateForUnknown'
+
+  - name: 'collation_name'
+    modifiers:
+      - 'UseStateForUnknown'
+
+  - name: 'compatibility'
+    modifiers:
+      - 'RequiresReplace'
+  
+  - name: 'compatibility_level'
+    modifiers:
+      - 'UseStateForUnknown'

stackit/internal/services/sqlserverflexbeta/database/resource.go

@@ -2,6 +2,7 @@ package sqlserverflexbeta
 
 import (
 	"context"
+	_ "embed"
 	"fmt"
 	"strings"
 	"time"
@@ -58,8 +59,25 @@ func (r *databaseResource) Metadata(
 	resp.TypeName = req.ProviderTypeName + "_sqlserverflexbeta_database"
 }
 
+//go:embed planModifiers.yaml
+var modifiersFileByte []byte
+
 func (r *databaseResource) Schema(ctx context.Context, req resource.SchemaRequest, resp *resource.SchemaResponse) {
-	resp.Schema = sqlserverflexbetaResGen.DatabaseResourceSchema(ctx)
+
+	s := sqlserverflexbetaResGen.DatabaseResourceSchema(ctx)
+
+	fields, err := utils.ReadModifiersConfig(modifiersFileByte)
+	if err != nil {
+		resp.Diagnostics.AddError("error during read modifiers config file", err.Error())
+		return
+	}
+
+	err = utils.AddPlanModifiersToResourceSchema(fields, &s)
+	if err != nil {
+		resp.Diagnostics.AddError("error adding plan modifiers", err.Error())
+		return
+	}
+	resp.Schema = s
 }
 
 func (r *databaseResource) IdentitySchema(