all: Add support for Manual Deferred Actions #900

Job	Run time
golangci-lint	26s
terraform-provider-corner (tfprotov6 / Terraform 1.0.*)	48s
terraform-provider-corner (tfprotov5 / Terraform 0.12.*)	31s
test (Go v1.22)	23s
terraform-provider-corner (tfprotov6 / Terraform 1.1.*)	44s
terraform-provider-corner (tfprotov5 / Terraform 0.13.*)	33s
test (Go v1.21)	34s
terraform-provider-corner (tfprotov6 / Terraform 1.2.*)	36s
terraform-provider-corner (tfprotov5 / Terraform 0.14.*)	48s
terraform-provider-corner (tfprotov6 / Terraform 1.3.*)	33s
terraform-provider-corner (tfprotov5 / Terraform 0.15.*)	38s
terraform-provider-corner (tfprotov6 / Terraform 1.4.*)	33s
terraform-provider-corner (tfprotov5 / Terraform 1.0.*)	39s
terraform-provider-corner (tfprotov5 / Terraform 1.1.*)	28s
terraform-provider-corner (tfprotov6 / Terraform 1.5.*)	32s
terraform-provider-corner (tfprotov5 / Terraform 1.2.*)	39s
terraform-provider-corner (tfprotov6 / Terraform 1.6.*)	38s
terraform-provider-corner (tfprotov5 / Terraform 1.3.*)	30s
terraform-provider-corner (tfprotov6 / Terraform 1.7.*)	39s
terraform-provider-corner (tfprotov5 / Terraform 1.4.*)	26s
terraform-provider-corner (tfprotov6 / Terraform 1.8.*)	1m 16s
terraform-provider-corner (tfprotov5 / Terraform 1.5.*)	31s
terraform-provider-corner (tfprotov5 / Terraform 1.6.*)	35s
terraform-provider-corner (tfprotov5 / Terraform 1.7.*)	30s
terraform-provider-corner (tfprotov5 / Terraform 1.8.*)	51s
	15m 21s

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