fix: pass OpenAPI type/format to runtime parameter binding and styling functions

Update all parameter binding and styling call sites across all server
templates and the client template to pass the OpenAPI schema Type and
Format through to the runtime library. This enables the runtime (v1.2.0+)
to correctly handle format: byte parameters by base64-encoding/decoding
the value, instead of incorrectly treating []byte as a generic []uint8
slice.

Changes:
- Add SchemaType() and SchemaFormat() helper methods to ParameterDefinition
- Update BindStyledParameterWithOptions calls in all 7 server templates
  (echo, chi, stdhttp, gin, gorilla, fiber, iris) to include Type/Format
- Replace BindQueryParameter with BindQueryParameterWithOptions in all 7
  server templates, passing Type/Format via options struct
- Replace StyleParamWithLocation with StyleParamWithOptions in client.tmpl,
  passing Type/Format via options struct
- Regenerate all test fixtures

Requires a minimum of runtime v1.2.0.

Closes #173
Closes oapi-codegen#2248

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

Author: 2 people