add poetry command (#67)

* add poetry command

* add poetry.lock extractor & define cmd parser for poetry

* feat: support Poetry caret/tilde version syntax

* add wildcard constraint support & test cases

* readme update

* chore: small fixes

cmd/pypi/poetry.go

@@ -0,0 +1,60 @@
+package pypi
+
+import (
+	"context"
+	"fmt"
+
+	"github.com/safedep/pmg/config"
+	"github.com/safedep/pmg/internal/analytics"
+	"github.com/safedep/pmg/internal/flows"
+	"github.com/safedep/pmg/internal/ui"
+	"github.com/safedep/pmg/packagemanager"
+	"github.com/spf13/cobra"
+)
+
+func NewPoetryCommand() *cobra.Command {
+	return &cobra.Command{
+		Use:                "poetry [action] [package]",
+		Short:              "Guard poetry package manager",
+		DisableFlagParsing: true,
+		RunE: func(cmd *cobra.Command, args []string) error {
+			err := executePoetryFlow(cmd.Context(), args)
+			if err != nil {
+				ui.ErrorExit(err)
+			}
+
+			return nil
+		},
+	}
+}
+
+func executePoetryFlow(ctx context.Context, args []string) error {
+	analytics.TrackCommandPoetry()
+	packageManager, err := packagemanager.NewPypiPackageManager(packagemanager.DefaultPoetryPackageManagerConfig())
+	if err != nil {
+		return fmt.Errorf("failed to create poetry package manager: %w", err)
+	}
+
+	config, err := config.FromContext(ctx)
+	if err != nil {
+		return fmt.Errorf("failed to get config: %w", err)
+	}
+
+	parsedCommand, err := packageManager.ParseCommand(args)
+	if err != nil {
+		return fmt.Errorf("failed to parse command: %w", err)
+	}
+
+	packageResolverConfig := packagemanager.NewDefaultPypiDependencyResolverConfig()
+	packageResolverConfig.IncludeTransitiveDependencies = config.Transitive
+	packageResolverConfig.TransitiveDepth = config.TransitiveDepth
+	packageResolverConfig.IncludeDevDependencies = config.IncludeDevDependencies
+	packageResolverConfig.PackageInstallTargets = parsedCommand.InstallTargets
+
+	packageResolver, err := packagemanager.NewPypiDependencyResolver(packageResolverConfig)
+	if err != nil {
+		return fmt.Errorf("failed to create dependency resolver: %w", err)
+	}
+
+	return flows.Common(packageManager, packageResolver, config).Run(ctx, args, parsedCommand)
+}