WIP implement tf backend git provider

src/main/python/ddadevops/domain/provider_tfGitBackend.py

@@ -0,0 +1,44 @@
+from typing import List, Dict, Set, Any
+from .common import Validateable, CredentialMappingDefault
+
+class TerraformGitBackend(Validateable, CredentialMappingDefault):
+  def __init__(
+      self,
+      inp: dict,
+  ):
+    self.stage = inp.get("stage")
+    self.module = inp.get("module")
+    self.git_backend_repo = inp.get("git_backend_repo")
+    self.git_backend_ref = inp.get("git_backend_ref")
+    self.git_backend_state = inp.get("git_backend_state")
+    self.git_backend_username = inp.get("git_backend_username")
+    self.git_backend_token = inp.get("git_backend_token")
+
+  def validate(self) -> List[str]:
+    result = []
+    result += self.__validate_is_not_empty__("stage")
+    result += self.__validate_is_not_empty__("module")
+    result += self.__validate_is_not_empty__("git_backend_repo")
+    result += self.__validate_is_not_empty__("git_backend_ref")
+    result += self.__validate_is_not_empty__("git_backend_state")
+    result += self.__validate_is_not_empty__("git_backend_username")
+    result += self.__validate_is_not_empty__("git_backend_token")
+
+    return result
+  
+  def backend_config(self) -> Dict[str, Any]:
+        return {
+          "git_backend_repo": self.git_backend_repo,
+          "git_backend_ref": self.git_backend_ref,
+          "git_backend_state": self.git_backend_state,
+          "git_backend_username": self.git_backend_username,
+          "git_backend_token": self.git_backend_token,
+        }
+  
+  def project_vars(self):
+        return {
+            "git_backend_token": self.git_backend_token,
+            "git_backend_username": self.git_backend_username,
+        }
+
+