Deprecate: verdi code setup and CodeBuilder

The CLI command is replaced with `verdi code create`. The `CodeBuilder`
is no longer necessary because code instances can now easily be created
through the constructor.

aiida/cmdline/commands/cmd_code.py

@@ -18,7 +18,7 @@
 from aiida.cmdline.params import arguments, options
 from aiida.cmdline.params.options.commands import code as options_code
 from aiida.cmdline.utils import echo
-from aiida.cmdline.utils.decorators import with_dbenv
+from aiida.cmdline.utils.decorators import deprecated_command, with_dbenv
 from aiida.common import exceptions
 
 
@@ -85,6 +85,7 @@ def set_code_builder(ctx, param, value):
 @options.CONFIG_FILE()
 @click.pass_context
 @with_dbenv()
+@deprecated_command('This command will be removed soon, use `verdi code create` instead.')
 def setup_code(ctx, non_interactive, **kwargs):
     """Setup a new code."""
     from aiida.orm.utils.builders.code import CodeBuilder

aiida/orm/utils/builders/code.py

@@ -13,8 +13,11 @@
 
 from aiida.cmdline.utils.decorators import with_dbenv
 from aiida.common.utils import ErrorAccumulator
+from aiida.common.warnings import warn_deprecation
 from aiida.orm import InstalledCode, PortableCode
 
+warn_deprecation('This module is deprecated. To create a new code instance, simply use the constructor.', version=3)
+
 
 class CodeBuilder:
     """Build a code with validation of attribute combinations"""