Add lint warnings for old naming conventions

[grahamlangford]

Context

• Add warnings for old naming conventions
• Should allow for auto-fix (to encourage refactoring)
• Needs to be a warning -- cannot change everything over without migrations and API changes
• May be able to leverage the unicorn/prevent-abbreviations rule
• Limiting to Extension instead of eslint-config-pixiebrix in order to reduce blast radius (we don't want to enforce this in App yet)

Likely safe changes

• recipe and blueprint -> mod

Riskier changes

• extensionPoint -> starterBrick
• service -> integration

Potentially problematic

• extension -> modComponent