build: set version statically in pyproject.toml

src/infra_rebuild/__about__.py

@@ -1 +0,0 @@
-__version__ = "0.0.1"

src/infra_rebuild/cli/__init__.py

@@ -1,11 +1,10 @@
 import click
 
 from infra_rebuild import operations
-from infra_rebuild.__about__ import __version__
 
 
 @click.group(context_settings={"help_option_names": ["-h", "--help"]}, invoke_without_command=True)
-@click.version_option(version=__version__, prog_name="infra-rebuild")
+@click.version_option(prog_name="infra-rebuild")
 def infra_rebuild():
     pass