Add exam score import and management workflows

.env.example

@@ -84,12 +84,6 @@ Operations__MySqlClientPath=mysql
 # Operations__MySqlAdditionalArguments__0=--ssl-mode=VERIFY_IDENTITY
 # Operations__MySqlAdditionalArguments__1=--ssl-ca=/etc/jiaowu/mysql-ca.pem
 
-# 签名插件包存储目录必须持久化，并仅允许服务账号写入。发布者公钥使用 RSA PEM。
-Plugins__StoragePath=/var/lib/jiaowu/plugins
-Plugins__MaximumPackageMegabytes=20
-# Plugins__TrustedPublishers__0__Id=school-it
-# Plugins__TrustedPublishers__0__PublicKeyPath=/etc/jiaowu/plugin-publishers/school-it-public.pem
-
 Jwt__Issuer=Jiaowu.Api
 Jwt__Audience=Jiaowu.Web
 Jwt__Key=REPLACE_WITH_AT_LEAST_32_RANDOM_BYTES

Jiaowu.slnx

@@ -1,12 +1,8 @@
 <Solution>
   <Folder Name="/src/">
     <Project Path="src/Jiaowu.Api/Jiaowu.Api.csproj" />
-    <Project Path="src/Jiaowu.Plugin.Abstractions/Jiaowu.Plugin.Abstractions.csproj" />
   </Folder>
   <Folder Name="/tests/">
     <Project Path="tests/Jiaowu.Api.Tests/Jiaowu.Api.Tests.csproj" />
   </Folder>
-  <Folder Name="/samples/">
-    <Project Path="samples/Jiaowu.SamplePlugin/Jiaowu.SamplePlugin.csproj" />
-  </Folder>
 </Solution>