feature model selection custom display name

[GrimalDev]

Added an option for a custom display name
I had the need for this option for multiple similar custom model configurations where I wanted to have more indicative titles.

Designed for cases like this

  vendors = {
    ["claude_37_tools_think"] = {
      __inherited_from = "claude",
      model = "claude-3-7-sonnet-latest",
      display_name = "Claude 3.7 (Sonnet) with tools and thinking",
      thinking = {
        type = "enabled",
        budget_tokens = 2048,
      },
      disable_tools = false,
      temperature = 1,
    },
    ["claude_37"] = {
      __inherited_from = "claude",
      model = "claude-3-7-sonnet-latest",
      display_name = "Claude 3.7 (Sonnet)",
      thinking = {
        type = "disabled",
      },
      disable_tools = true,
    },
    ["claude_haiku_tools"] = {
      __inherited_from = "claude",
      model = "claude-3-5-haiku-latest",
      display_name = "Claude 3.5 (Haiku) with tools",
      disable_tools = false,
    },
    ["claude_haiku"] = {
      __inherited_from = "claude",
      model = "claude-3-5-haiku-latest",
      display_name = "Claude 3.5 (Haiku)",
      disable_tools = true,
    },
  },

To achieve this:

[yetone]

‌‌‌‌‌‌Hello, please fix the lint error.

[GrimalDev]

‌‌‌‌‌‌Hello, please fix the lint error.

oups, my linter wasn't working correctly, fix it