feat: declare tool dependencies in package configs via tools field

- Add 'tools' field to ConfigValidator for build-time tool declarations
- Move jom and strawberry-perl from depends@windows to tools@windows in openssl.yml
- Move go-xcaddy/go-win from depends to tools in frankenphp.yml
- Register config/pkg/tool/ path in spc.registry.yml
- Use addInstallPackage for upx tool in php.php (ToolPackage instead of library dep)
- Include 'tool' type in DumpCapabilitiesCommand and InstallPackageCommand package lists

config/pkg/lib/openssl.yml

@@ -17,7 +17,6 @@ openssl:
     - zlib
   depends@windows:
     - zlib
-    - jom
   headers:
     - openssl
   static-libs@unix:
@@ -26,3 +25,6 @@ openssl:
   static-libs@windows:
     - libssl.lib
     - libcrypto.lib
+  tools@windows:
+    - jom
+    - strawberry-perl

config/pkg/target/frankenphp.yml

@@ -10,10 +10,8 @@ frankenphp:
       license: MIT
   depends:
     - php-embed
-    - go-xcaddy
   depends@windows:
     - php-embed
-    - go-win
     - pthreads4w
   suggests@unix:
     - brotli
@@ -24,3 +22,7 @@ frankenphp:
     - frankenphp
   static-bins@windows:
     - frankenphp.exe
+  tools:
+    - go-xcaddy
+  tools@windows:
+    - go-win