[Feature]: Add base44 types command for TypeScript type generation

[gonengar]

Problem Statement

Summary

Add a new base44 types command that generates TypeScript types from local entity schemas, enabling type-safe usage of the @base44/sdk.

Problem

Developers using Base44 define entities in JSON schema files, but lack TypeScript types for:

• Type-safe data access in frontend code
• IDE autocomplete when working with entities
• Compile-time validation of entity properties

Solution

The base44 types command reads local entity schemas and generates:

File	Contents
entities.ts	Entity interfaces + CreateInput/UpdateInput/Filter types
client.ts	Typed SDK client interface matching @base44/sdk API
index.ts	Barrel exports

Usage

# Generate types (outputs to src/base44/)
base44 types

# Custom output directory
base44 types --output ./types

# Only generate entity types, skip client wrapper
base44 types --entities-only

### Proposed Solution

_No response_

### Alternatives Considered

_No response_

### Usage Examples

_No response_

### Additional Context

_No response_

[kfirstri]

Merged as undocumented in #199