add example for gitea_fork resource

examples/resources/gitea_fork/resource.tf

@@ -0,0 +1,23 @@
+resource "gitea_org" "org1" {
+  name = "org1"
+}
+
+resource "gitea_org" "org2" {
+  name = "org2"
+}
+
+resource "gitea_repository" "repo1_in_org1" {
+  username = gitea_org.org1.name
+  name = "repo1-in-org1"
+}
+
+resource "gitea_fork" "user_fork_of_repo1_in_org1" {
+  owner = gitea_org.org1.name
+  repo = gitea_repository.repo1_in_org1.name
+}
+
+resource "gitea_fork" "org2_fork_of_repo1_in_org1" {
+  owner = gitea_org.org1.name
+  repo = gitea_repository.repo1_in_org1.name
+  organization = gitea_org.org2.name
+}