Added set-version logic && Fixed CustomScriptService to handle arguments

tools/set_version/git_service.py

@@ -0,0 +1,18 @@
+import os
+
+from cpl_core.environment import ApplicationEnvironmentABC
+
+
+class GitService:
+
+    def __init__(self, env: ApplicationEnvironmentABC):
+        self._env = env
+
+    def get_active_branch_name(self) -> str:
+        head_dir = os.path.join(self._env.working_directory, '.git/HEAD')
+        with open(head_dir, 'r') as f:
+            content = f.read().splitlines()
+
+        for line in content:
+            if line[0:4] == "ref:":
+                return line.partition("refs/heads/")[2]