feat: support some IP related functions

[waynexia]

I hereby agree to the terms of the GreptimeDB CLA.

Refer to a related PR or issue link (optional)

What's changed and what's your intention?

New functions:

• ipv4_string_to_num
• ipv4_num_to_string
• ipv4_to_cidr
• ipv4_in_range
• ipv6_num_to_string
• ipv6_string_to_num
• ipv6_to_cidr
• ipv6_in_range

PR Checklist

Please convert it to a draft if some of the following conditions are not met.

• I have written the necessary rustdoc comments.
• I have added the necessary unit tests and integration tests.
• This PR requires documentation updates.
• API changes are backward compatible.
• Schema or data changes are backward compatible.

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PR Overview

This PR introduces IP-related functions to support IPv4 and IPv6 address conversions, including string and numeric representations as well as range and CIDR conversions.

• Added new IPv4 functions: converting UInt32 to string, string to UInt32, and CIDR and range checks.
• Added new IPv6 functions: converting hexadecimal strings to formatted IPv6 strings, string to binary conversion, and CIDR and range checks.
• Updated the function registry to include IP functions.

Reviewed Changes

File	Description
src/common/function/src/scalars/ip.rs	New module to register the IP functions
src/common/function/src/scalars/ip/ipv4.rs	Implementation and tests for IPv4 conversion functions
src/common/function/src/scalars/ip/ipv6.rs	Implementation and tests for IPv6 conversion functions
src/common/function/src/function_registry.rs	Updated to add registration of the IP functions
src/common/function/src/scalars.rs	Added module export for IP functions

Copilot reviewed 9 out of 9 changed files in this pull request and generated no comments.

Comments suppressed due to low confidence (1)

src/common/function/src/scalars/ip/ipv6.rs:36

• [nitpick] The name 'ipv6_num_to_string' may be misleading because, unlike its IPv4 counterpart that works with a numeric type, this function expects a hexadecimal string representation as input. Consider renaming it to 'ipv6_hex_to_string' for improved clarity.

pub struct Ipv6NumToString;