Add Behavior Pack: Create feature / feature rule commands

[Copilot]

Users had no way to scaffold feature and feature rule files from the command palette — they had to create them manually.

Changes

• ide/shared/src/constants.ts — Added Commands.Create.Behaviorpack.Feature (bc-create-behavior-feature) and Feature_Rule (bc-create-behavior-feature_rule) constants.

• ide/base/server/src/lsp/templates/definitions/behavior-pack.ts — Added template bodies:

  • feature: minecraft:single_block_feature skeleton (format 1.16.0)
  • feature_rule: minecraft:feature_rules skeleton (format 1.13.0) with biome filter, distribution, and a places_feature placeholder

• ide/base/server/src/lsp/commands/commands/templates.ts — Wired up TemplateItem entries targeting features/${{id.safe}}.feature.json and feature_rules/${{id.safe}}.feature_rule.json.

• ide/base/client/src/commands/create-templates.ts — Registered createCommandWithID handlers with namespace-qualified ID validation.

• ide/vscode/package.json — Exposed both commands in the palette under the Blockception category with ext:is_active enablement.

Example output

Running Behavior Pack: Create feature rule file and entering example:my_rule produces:

{
  "format_version": "1.13.0",
  "minecraft:feature_rules": {
    "description": {
      "identifier": "example:my_rule",
      "places_feature": "namespace:feature_name"
    },
    "conditions": {
      "placement_pass": "surface_pass",
      "minecraft:biome_filter": [{ "test": "has_biome_tag", "operator": "==", "value": "overworld" }]
    },
    "distribution": {
      "iterations": 1,
      "x": { "extent": [0, 15] },
      "y": { "extent": [0, 64] },
      "z": { "extent": [0, 15] },
      "scatter_chance": 100
    }
  }
}

places_feature is intentionally left as a placeholder since it must reference a separately defined feature identifier.

Original prompt

---

This section details on the original issue you should resolve

<issue_title>Features and Feature rules command</issue_title>
<issue_description>Is your feature request related to a problem? Please describe.
No

Describe the solution you'd like
Add a command for creating features and feature rules using CTRL+P

Describe alternatives you've considered
Manually creating the file</issue_description>

Comments on the Issue (you are @copilot in this section)

• Fixes Features and Feature rules command #19

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