support: naming convention feature for snowflake source

### Is your proposal related to a problem?

As per current implementation, naming convention feature is only supported for postgres source. Acc to this [doc](https://hasura.io/docs/latest/schema/postgres/naming-convention/#introduction),
> Naming conventions are only available on Postgres sources.

### Describe the solution you'd like
This feature request is aimed towards exploring possibility for implementing naming convention feature for snowflake source particularly.

### Workaround

You can set custom field name for table at root level , query level and mutation level. This is a bit tedious approach as you'll need to go and set it manually by visiting every "tracked" table under snowflake database.

Console -> Database -> Schema -> Table -> Modify -> Custom Field names. For reference, see the screenshot below.

Start by locating the existing Postgres naming-convention implementation and the Snowflake source integration. Define the supported naming-convention behavior for Snowflake and its completion criteria before identifying the affected code and tests.

Written by the indexing model from the issue text.