refactor(justfile): split justfile into small files (#42)

- build.just
- debug.just
- dev.just
- gen.just
- pkg.just
- test.just

justfiles/test.just

@@ -0,0 +1,15 @@
+# run all tests
+[group('test')]
+test:
+    @go test ./... -v
+
+# run project health and scoring analyzer
+alias ana := analyze
+[group('test')]
+analyze:
+    @go run scripts/test_analyzer.go
+
+# run linter
+[group('test')]
+lint:
+    @golangci-lint run ./...