Add migration guide

docs/docs/migration/migration-from-v7-to-v8.md

@@ -16,6 +16,8 @@ It automatically installs the new versions of all `@comet` libraries, runs an ES
 -   Run MUI codemods
 -   Upgrade MUI X packages to v6
 -   Upgrade NestJS packages to v10
+-   Remove passport-dependencies (we don't use passport anymore)
+-   Add @nestjs/jwt dependencys
 
 </details>
 
@@ -126,8 +128,55 @@ The class-validator peer dependency has been bumped to v0.14.0:
 npx @comet/upgrade v8/update-class-validator.ts
 ```
 
+#### Remove passport
+
+Remove all passport-dependencies and add @nestjs/jwt
+
+```diff title=api/package.json
+{
+    "dependencies": {
+-       "@nestjs/passport": "^9.0.0",
+-       ...other passport dependencies
++       "@nestjs/jwt": "^10.2.0",
+    }
+}
+```
+
+:::note Codemod available
+
+```sh
+npx @comet/upgrade v8/remove-passport.ts
+```
+
 :::
 
+Wrap the strategies in `...createAuthGuardProviders()`:
+
+```diff title=api/src/auth/auth.module.ts
+-   createStaticCredentialsBasicStrategy({ ... }),
+-   createAuthProxyJwtStrategy({ ... }),
++   ...createAuthGuardProviders(
++       createStaticCredentialsBasicStrategy({ ... }),
++       createAuthProxyJwtStrategy({ ... }),
++   ),
+```
+
+:::note The configuration of the strategies may have changed slightly. Consulting the code completion should help to adapt.
+
+Replace `createAuthResolver` with the class name:
+
+```diff title=api/src/auth/auth.module.ts
+-   useClass: createCometAuthGuard([...]),
++   useClass: CometAuthGuard,
+```
+
+Import `JwtModule` from `@nestjs/jwt`:
+
+```diff title=api/src/auth/auth.module.ts
+    exports: [UserService, AccessControlService],
++   imports: [JwtModule],
+```
+
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