chore: Deprecate functions that should be replaced by migrations

[joc-a]

Description

Summary of the change: Deprecate functions that should be replaced by migrations

Detailed description:

• Why: These schema-altering functions will be replaced by migrations.
• How: Added WARNING deprecation level to the functions.

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Type of Change

Please mark the relevant options with an "X":

• Bug fix
• New feature
• Documentation update
• Other - deprecation

Updates/remove existing public API methods:

• Is breaking change

Affected databases:

• MariaDB
• Mysql5
• Mysql8
• Oracle
• Postgres
• SqlServer
• H2
• SQLite

Checklist

• Unit tests are in place
• The build is green (including the Detekt check)
• All public methods affected by my PR has up to date API docs
• Documentation for my change is up to date

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Related Issues

EXPOSED-101