Add the alpha <resource> create command

[pPrecel]

Description

Changes proposed in this pull request:

• make the create template command

How to run it

1. add the following configmap to the cluster:

apiVersion: v1
data:
  rootCommand: |
    name: function
    description: Set of commands for managing Functions
    descriptionLong: Use this command manage Functions
  resource: |
    scope: namespace
    kind: Function
    version: v1alpha2
    group: serverless.kyma-project.io
  templateCommands: |
    create:
      description: create test resource
      descriptionLong: use this command to create test resource
      customFlags:
      - type: "string"
        name: "runtime"
        description: "function runtime"
        shorthand: "r"
        path: ".spec.runtime"
        default: "nodejs22"
      - type: "int64"
        name: "replicas"
        description: "function replicas"
        path: ".spec.replicas"
        default: 1
      - type: "path"
        name: "source"
        description: "function source file path"
        shorthand: "s"
        path: ".spec.source.inline.source"
        default: |
          module.exports = {
            main: function(event, context) {
              return 'Hello World!'
            }
          }
      - type: "path"
        name: "dependencies"
        description: "function dependencies file path"
        shorthand: "d"
        path: ".spec.source.inline.dependencies"
kind: ConfigMap
metadata:
  labels:
    kyma-cli/extension: resource
    kyma-project.io/module: function
  name: serverless.function.cli
  namespace: kyma-system

2. build the cli from this PR:

go build --output kyma-dev main.go

3. use command

./kyma-dev alpha --help

Related issue(s)

• Implement CLI commands for serverless module serverless#1247