✨(release) add python script to prepare release

Change versions, update changelog and create branch and commit
to submit release informations.
Give following instructions to do after.

scripts/utils.py

@@ -0,0 +1,14 @@
+import subprocess
+import sys
+
+
+def run_command(cmd, msg=None, shell=False, cwd='.', stdout=None):
+    if msg is None:
+        msg = f"# Running: {cmd}"
+    if stdout is not None:
+        stdout.write(msg + '\n')
+        if stdout != sys.stdout:
+            sys.stdout(msg)
+    subprocess.check_call(cmd, shell=shell, cwd=cwd, stdout=stdout, stderr=stdout)
+    if stdout is not None:
+        stdout.flush()