Add Connect spec validation task

[matthiasdv]

Add a task to check the drift / diff between our spec files and Wombat components:

task test:spec

Sample output:

=== VALIDATION RESULTS ===

❌ output/amqp_0_9: 1 issues found
   🟡 [WARNING] exchange_declare.arguments: Required field missing from connect spec

✅ output/amqp_1: OK
❌ output/aws_dynamodb: 6 issues found
   🟡 [WARNING] credentials.profile: Required field missing from connect spec
   🟡 [WARNING] credentials.from_ec2_role: Required field missing from connect spec
   🟡 [WARNING] credentials.role: Required field missing from connect spec
   🟡 [WARNING] credentials.role_external_id: Required field missing from connect spec
   🟡 [WARNING] batching: Required field missing from connect spec
   🟡 [WARNING] backoff: Required field missing from connect spec

❌ output/aws_kinesis: 6 issues found
   🟡 [WARNING] credentials.profile: Required field missing from connect spec
   🟡 [WARNING] credentials.from_ec2_role: Required field missing from connect spec
   🟡 [WARNING] credentials.role: Required field missing from connect spec
   🟡 [WARNING] credentials.role_external_id: Required field missing from connect spec
   🟡 [WARNING] batching: Required field missing from connect spec
   🟡 [WARNING] backoff: Required field missing from connect spec

❌ output/aws_kinesis_firehose: 6 issues found
   🟡 [WARNING] credentials.profile: Required field missing from connect spec
   🟡 [WARNING] credentials.from_ec2_role: Required field missing from connect spec
   🟡 [WARNING] credentials.role: Required field missing from connect spec
   🟡 [WARNING] credentials.role_external_id: Required field missing from connect spec
   🟡 [WARNING] batching: Required field missing from connect spec
   🟡 [WARNING] backoff: Required field missing from connect spec

❌ output/aws_s3: 6 issues found
   🔴 [ERROR] metadata.metadata.exclude_prefixes: Type mismatch: connect=string, benthos=array
   🟡 [WARNING] credentials.profile: Required field missing from connect spec
   🟡 [WARNING] credentials.from_ec2_role: Required field missing from connect spec
   🟡 [WARNING] credentials.role: Required field missing from connect spec
   🟡 [WARNING] credentials.role_external_id: Required field missing from connect spec
   🟡 [WARNING] batching: Required field missing from connect spec

[...]

=== SUMMARY ===
Total components validated: 70
Components with issues: 48
Total issues found: 145

❌ Validation failed with errors