Add sample pipeline for building API project

.woodpecker.yaml

@@ -0,0 +1,22 @@
+steps:
+  - name: BuildAPI
+    image: mcr.microsoft.com/dotnet/sdk:6.0
+    commands:
+      - dotnet build ./API
+      - dotnet test ./
+  - name: DeployAPIDockerImage
+    when: 
+      - event: tag
+    secrets: [auth0_iwanagadev_clientid, auth0_iwanagadev_clientsecret, auth0_iwanagadev_domain, auth0_iwanagadev_identifier, yabadev_roconnectionstring, yabadev_rwconnectionstring, gitea_yaba_registry_username, gitea_yaba_registry_password]
+    image: woodpeckerci/plugin-docker-buildx
+    settings:
+      repo: yaba/api
+      dockerfile: ./API/YABA.API/Dockerfile
+      tags: [latest, ${CI_COMMIT_TAG}]
+      username: ${gitea_yaba_registry_username}
+      password: ${gitea_yaba_registry_password}
+      registry: https://gitea.iwanaga.moe/cjtibule/YABA/packages
+      
+
+    
+