Add plugins for all collections

Generate plugin directories for 36 collections not previously represented:
- awesome-copilot, cast-imaging, clojure-interactive-programming, copilot-sdk
- csharp-dotnet-development, csharp-mcp-development, database-data-management
- dataverse-sdk-for-python, devops-oncall, edge-ai-tasks, frontend-web-dev
- go-mcp-development, java-development, java-mcp-development, kotlin-mcp-development
- mcp-m365-copilot, openapi-to-application-* (5 variants), partners
- pcf-development, php-mcp-development, power-apps-code-apps, power-bi-development
- power-platform-mcp-connector-development, python-mcp-development
- ruby-mcp-development, rust-mcp-development, security-best-practices
- structured-autonomy, swift-mcp-development, technical-spike
- typescript-mcp-development, typespec-m365-copilot

Each plugin includes:
- .github/plugin/plugin.json with metadata
- README.md with installation instructions
- Symlinks to canonical agents, commands, and skills

Updated marketplace.json to include all 40 plugins.

plugins/partners/agents/amplitude-experiment-implementation.md

@@ -0,0 +1 @@
+../../../agents/amplitude-experiment-implementation.agent.md

plugins/partners/agents/apify-integration-expert.md

@@ -0,0 +1 @@
+../../../agents/apify-integration-expert.agent.md

plugins/partners/agents/arm-migration.md

@@ -0,0 +1 @@
+../../../agents/arm-migration.agent.md

plugins/partners/agents/comet-opik.md

@@ -0,0 +1 @@
+../../../agents/comet-opik.agent.md

plugins/partners/agents/diffblue-cover.md

@@ -0,0 +1 @@
+../../../agents/diffblue-cover.agent.md

plugins/partners/agents/droid.md

@@ -0,0 +1 @@
+../../../agents/droid.agent.md

plugins/partners/agents/dynatrace-expert.md

@@ -0,0 +1 @@
+../../../agents/dynatrace-expert.agent.md

plugins/partners/agents/elasticsearch-observability.md

@@ -0,0 +1 @@
+../../../agents/elasticsearch-observability.agent.md

plugins/partners/agents/jfrog-sec.md

@@ -0,0 +1 @@
+../../../agents/jfrog-sec.agent.md

plugins/partners/agents/launchdarkly-flag-cleanup.md

@@ -0,0 +1 @@
+../../../agents/launchdarkly-flag-cleanup.agent.md

plugins/partners/agents/lingodotdev-i18n.md

@@ -0,0 +1 @@
+../../../agents/lingodotdev-i18n.agent.md

plugins/partners/agents/monday-bug-fixer.md

@@ -0,0 +1 @@
+../../../agents/monday-bug-fixer.agent.md

plugins/partners/agents/mongodb-performance-advisor.md

@@ -0,0 +1 @@
+../../../agents/mongodb-performance-advisor.agent.md

plugins/partners/agents/neo4j-docker-client-generator.md

@@ -0,0 +1 @@
+../../../agents/neo4j-docker-client-generator.agent.md

plugins/partners/agents/neon-migration-specialist.md

@@ -0,0 +1 @@
+../../../agents/neon-migration-specialist.agent.md

plugins/partners/agents/neon-optimization-analyzer.md

@@ -0,0 +1 @@
+../../../agents/neon-optimization-analyzer.agent.md

plugins/partners/agents/octopus-deploy-release-notes-mcp.md

@@ -0,0 +1 @@
+../../../agents/octopus-deploy-release-notes-mcp.agent.md

plugins/partners/agents/pagerduty-incident-responder.md

@@ -0,0 +1 @@
+../../../agents/pagerduty-incident-responder.agent.md

plugins/partners/agents/stackhawk-security-onboarding.md

@@ -0,0 +1 @@
+../../../agents/stackhawk-security-onboarding.agent.md

plugins/partners/agents/terraform.md

@@ -0,0 +1 @@
+../../../agents/terraform.agent.md