[BUG][Rust] Request trait library does not compile with keyword parameters

[ranger-ross]

Bug Report Checklist

• Have you provided a full/minimal spec to reproduce the issue?
• Have you validated the input using an OpenAPI validator (example)?
• Have you tested with the latest master to confirm the issue still exists?
• Have you searched for related issues/PRs?
• What's the actual output vs expected output?
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Description

Function parameters are properly escaped with r# but with the new reqwest-trait client we introduced lifetime parameters that reused to the parameter name.
# is not valid in lifetime names.

Error

115 |     async fn find_pets_by_status<'r#type>(&self, r#type: Option<&'r#type str>) -> Result<Vec<models::Pet>, Error<FindPetsByStatusError>> {
    |                                    ^ expected one of `,`, `:`, or `>`

openapi-generator version

build from source Git Hash cc40f40

OpenAPI declaration file content or url

# ...
  /pet/findByStatus:
    get:
      tags:
        - pet
      summary: Finds Pets by status
      description: Multiple status values can be provided with comma separated strings
      operationId: findPetsByStatus
      parameters:
        - name: type # <------- This is a Rust keyword
          in: query
          description: Status values that need to be considered for filter
          required: false
          explode: true
          schema:
            type: string
            default: available
            enum:
              - available
              - pending
              - sold
# ...

Generation Details

generatorName: rust
library: reqwest-trait
additionalProperties:
  supportMiddleware: true
  preferUnsignedInt: true
  topLevelApiClient: true
  useBonBuilder: true
  mockall: true

Steps to reproduce

1. Create an openapi spec with query param with the name of any Rust keyword
2. Generate the client with the config above
3. Run cargo build

Related issues/PRs

Suggest a fix

This can be fixed by simply replacing the r# with a r_ as that is a valid lifetime name.

[wing328]

as a workaround you may want to try the parameter name mapping option to avoid keyword collision

https://github.com/openapitools/openapi-generator/blob/master/docs/customization.md#name-mapping