Fix PathVariable pattern with *

[lucarota]

Adds a split, in OAS3 path builder, for Spring's PathVariable {*path} Pattern

Description

Adds split on {*path} without escaping special characters to allow slash as in url endpoints

Motivation and Context

With Spring you can define a path pattern "/other/path/{*extra}" to match multiple segments at the end of a path.
So {*extra} might contains "other/path/segments" see https://spring.io/blog/2020/06/30/url-matching-with-pathpattern-in-spring-mvc for more info.

How Has This Been Tested?

Tested using this https://github.com/lucarota/file-server spring application as backend

Screenshots (if appropriate):

Types of changes

• No code changes (changes to documentation, CI, metadata, etc)
• Dependency changes (any modification to dependencies in package.json)
• Bug fix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Breaking change (fix or feature that would cause existing functionality to change)

Checklist:

• My code follows the code style of this project.
• My change requires a change to the documentation.
• I have updated the documentation accordingly.
• I have added tests to cover my changes.
• All new and existing tests passed.

[char0n]

Hi @lucarota,

Unfortunately I cannot merge this PR. The Path template syntax is not and cannot be supported with current OpenAPI 3.0.3 and OpenAPI 3.1.0 specifications.

Please have a look at OAI/OpenAPI-Specification#1459 specifically at this comment.

Sorry about that.