feat(core): Expose version info (#1841)

### Proposed Changes

- Adds sdk.Version and sdk.TDFSpecVersion strings for library
integrators to inspect
- Adds `version` subcommand to platform service
- The values should be updated automatically with release please
- Note this means the version of main will be pinned to the last release


### Checklist

- [ ] I have added or updated unit tests
- [ ] I have added or updated integration tests (if appropriate)
- [ ] I have added or updated documentation

### Testing Instructions

Makefile

@@ -19,7 +19,7 @@ toolcheck:
 	@which buf > /dev/null || (echo "buf not found, please install it from https://docs.buf.build/installation" && exit 1)
 	@which golangci-lint > /dev/null || (echo "golangci-lint not found, run  'go install github.com/golangci/golangci-lint/cmd/[email protected]'" && exit 1)
 	@which protoc-gen-doc > /dev/null || (echo "protoc-gen-doc not found, run 'go install github.com/pseudomuto/protoc-gen-doc/cmd/[email protected]'" && exit 1)
-	@golangci-lint --version | grep "version v\?1.61" > /dev/null || (echo "golangci-lint version must be v1.61 or later [$$(golangci-lint --version)]" && exit 1)
+	@golangci-lint --version | grep "version v\?1.6[123]" > /dev/null || (echo "golangci-lint version must be v1.61 or later [$$(golangci-lint --version)]" && exit 1)
 	@which goimports >/dev/null || (echo "goimports not found, run 'go install golang.org/x/tools/cmd/goimports@latest'")
 
 fix: tidy fmt

release-please.json

@@ -20,10 +20,22 @@
       "component": "protocol/go"
     },
     "sdk": {
-      "component": "sdk"
+      "component": "sdk",
+      "extra-files": [
+        {
+          "type": "generic",
+          "path": "sdk/version.go"
+        }
+      ]
     },
     "service": {
-      "component": "service"
+      "component": "service",
+      "extra-files": [
+        {
+          "type": "generic",
+          "path": "service/cmd/version.go"
+        }
+      ]
     }
   }
 }

sdk/version.go

@@ -0,0 +1,6 @@
+package sdk
+
+const (
+	Version        = "0.3.23" // SDK version // x-release-please-version
+	TDFSpecVersion = "4.2.2"  // Vesion of TDF Spec currently targeted by the SDK
+)

service/cmd/version.go

@@ -0,0 +1,16 @@
+package cmd
+
+import "github.com/spf13/cobra"
+
+const Version = "0.4.36" // Service Version // x-release-please-version
+
+func init() {
+	rootCmd.AddCommand(&cobra.Command{
+		Use:   "version",
+		Short: "Platform version information",
+		RunE: func(cmd *cobra.Command, _ []string) error {
+			cmd.Println(Version)
+			return nil
+		},
+	})
+}