add phone number format checking (#2125)

skyvern/forge/prompts/skyvern/check-phone-number-format.j2

@@ -0,0 +1,41 @@
+You need to help checking if the current phone number format is matching the required format according to the user goal, user details and HTML elements.
+
+There are several checkpoints to verify the format of the phone number:
+- Whether the phone number should add hyphen.
+- Whether the phone number should add country code.
+- Whether the phone number should add space between the country code and the area code.
+
+MAKE SURE YOU OUTPUT VALID JSON. No text before or after JSON, no trailing commas, no comments (//), no unnecessary quotes, etc.
+
+Reply in JSON format with the following keys:
+{
+"phone_number_format": str, // Think step by step. The format of the phone number required on the page according to HTML elements.
+"thought": str, // Think step by step. Describe your thought about how you come up with the phone_number_format. Use information you see on the site to explain.
+"is_current_format_correct": bool, // True if the current phone number format is matching the required format.
+"recommended_phone_number": str, // If is_current_format_correct is True, return null. Otherwise, return the recommended phone number with the correct format.
+}
+
+Current phone number:
+```
+{{ current_phone_number }}
+```
+
+User goal:
+```
+{{ navigation_goal }}
+```
+
+User details:
+```
+{{ navigation_payload_str }}
+```
+
+HTML elements:
+```
+{{ elements }}
+```
+
+Current datetime, ISO format:
+```
+{{ local_datetime }}
+```