Use debug.BuildInfo to produce a version

Add a --version command, which uses build info to output a version
number, and also, embed this same version in generated code.

Remove accidental executable checkin

Somehow, a compiled executable snuck into git, we don't want
that.

Fix multi-line comment generate failed issue (oapi-codegen#334)

* test: expose the multi-line comment generate error

* fix: multi-line comment generation error for types

Co-authored-by: Marcin Romaszewicz <47459980+deepmap-marcinr@users.noreply.github.com>

feature(extension): support x-omitempty (oapi-codegen#295)

Co-authored-by: Weidong Feng <weidong.feng@shanbay.com>
Co-authored-by: Marcin Romaszewicz <47459980+deepmap-marcinr@users.noreply.github.com>

Clean up parameter escaping

This fixes oapi-codegen#302. We were really sloppy with escaping and unescaping
parameters, so I added another parameter to Bind/StyleParam which
informs where the parameter is located, so that we can do proper
escaping based on location. The server code performs corresponding
unescaping.

Fix ordering of security requirements

This fixes oapi-codegen#316. Maps are randomized, so sort the keys.

Fix query arg escaping and unescaping

This fixes oapi-codegen#312, by ensuring that queries are properly escaped in
the client, and properly unescaped in the server.

Revert "Fix client request url construction when colon in path (oapi-…

…codegen#313)"

This reverts commit 720dae1. It broke
path handling in a different way. We will fix this differently.

Fix request editors not updating the original request (oapi-codegen#1) (

oapi-codegen#306)

Co-authored-by: Marcin Romaszewicz <47459980+deepmap-marcinr@users.noreply.github.com>

Fix security scheme naming issue

PR 258 broke generated code when the security scheme is an invalid
Go identifier. Sanitize the name as a quick fix.