Add a new macro - get_columns_by_pattern

### Describe the feature

**get_columns_by_pattern(table, pattern)**
A macro that only returns columns matching a given search pattern.

**Example**
For a table containing the following columns:
```
user_id, current_item, last_item, state
```

A macro with the search expression: `%_item`
```
dbt_utils.get_columns_by_pattern(table=ref('table_name'), pattern='%_item')
```
returns just the column names ending with `_item`
(`current_item,last_item`)

### Describe alternatives you've considered
It's pretty easy to write this with just a for loop in Jinja, but I'm unaware of any other idiomatic approach. I've searched around quite frequently because it seems to me like something that should already exist.

### Additional context
Implementation could likely mirror the existing [get_relations_by_pattern/get_tables_by_pattern](https://github.com/dbt-labs/dbt-utils/blob/main/macros/sql/get_relations_by_pattern.sql) code

### Who will this benefit?
(_Mostly me_) but also any other developer who's been unfortunate enough to ingest a data source with fields formatted in the style of `2024_season, 2023_season, 2022_season` etc.

It could be just me, but as a frequent user of the `star` and `get_relations_by_pattern` macros, I feel like I'm committing a small crime by writing the required 3 lines of Jinja

### Are you interested in contributing this feature?
I already have a simpler version of this macro that I use for my own work, I'd be more than happy to contribute