SNOW-2333111: Add support for Geospatial functions - part 1

[sfc-gh-aherreraaguilar]

1. Which Jira issue is this PR addressing? Make sure that there is an accompanying issue to your PR.

   Fixes SNOW-2333111

2. Fill out the following pre-review checklist:

   • I am adding a new automated test(s) to verify correctness of my new code
     • If this test skips Local Testing mode, I'm requesting review from @snowflakedb/local-testing
   • I am adding new logging messages
   • I am adding a new telemetry message
   • I am adding new credentials
   • I am adding a new dependency
   • If this is a new feature/behavior, I'm adding the Local Testing parity changes.
   • I acknowledge that I have ensured my changes to be thread-safe. Follow the link for more information: Thread-safe Developer Guidelines
   • If adding any arguments to public Snowpark APIs or creating new public Snowpark APIs, I acknowledge that I have ensured my changes include AST support. Follow the link for more information: AST Support Guidelines

3. Please describe how your code solves the related issue.

• Added support for the following scalar functions in functions.py:
  • h3_polygon_to_cells
  • h3_polygon_to_cells_strings
  • h3_string_to_int
  • h3_try_polygon_to_cells_strings
  • h3_cell_to_children
  • h3_cell_to_children_string
  • h3_int_to_string

[sfc-gh-mvegaalvarez]

code looks good
added several comments regarding the documentation consistency

my suggestion for the Args and Returns format, you can use another, but stick to it and be consistent:

Args:
    <argName> (<type>): <description of the arg, without references to the type no> 
Returns:
    <returnType>: <description of return value, without reference to the type>

[sfc-gh-aherreraaguilar]

@sfc-gh-mvegaalvarez comments solved

[sfc-gh-mvegaalvarez]

Looks good!