feat(CIE): Implement OIDC RP Service with login, callback, and session management

CMakeLists.txt

@@ -33,16 +33,32 @@ else ()
             "BUILD_YAML_CONFIG OFF"
             "BUILD_TESTING OFF"
     )
+
+    CPMAddPackage(
+        NAME jwt-cpp
+        GITHUB_REPOSITORY Thalhammer/jwt-cpp
+        GIT_TAG v0.7.1
+        OPTIONS
+            "JWT_BUILD_EXAMPLES OFF"
+            "JWT_BUILD_TESTS OFF"
+            "JWT_DISABLE_PICOJSON ON"
+    )
 endif ()
 
 set(APP_SOURCES
     ${CMAKE_CURRENT_SOURCE_DIR}/controllers/ApiController.cc
     ${CMAKE_CURRENT_SOURCE_DIR}/controllers/AdminController.cc
     ${CMAKE_CURRENT_SOURCE_DIR}/controllers/AuthController.cc
+    ${CMAKE_CURRENT_SOURCE_DIR}/controllers/OidcController.cc
     ${CMAKE_CURRENT_SOURCE_DIR}/controllers/PublicController.cc
     ${CMAKE_CURRENT_SOURCE_DIR}/controllers/ReportController.cc
     ${CMAKE_CURRENT_SOURCE_DIR}/controllers/UserController.cc
     ${CMAKE_CURRENT_SOURCE_DIR}/common/Auth.cc
+    ${CMAKE_CURRENT_SOURCE_DIR}/common/OidcRpConfig.cc
+    ${CMAKE_CURRENT_SOURCE_DIR}/common/OidcHttp.cc
+    ${CMAKE_CURRENT_SOURCE_DIR}/common/OidcCrypto.cc
+    ${CMAKE_CURRENT_SOURCE_DIR}/common/OidcJwt.cc
+    ${CMAKE_CURRENT_SOURCE_DIR}/common/OidcUserClaims.cc
     ${CMAKE_CURRENT_SOURCE_DIR}/common/Cors.cc
     ${CMAKE_CURRENT_SOURCE_DIR}/common/Crypto.cc
     ${CMAKE_CURRENT_SOURCE_DIR}/common/Email.cc
@@ -54,6 +70,7 @@ set(APP_SOURCES
     ${CMAKE_CURRENT_SOURCE_DIR}/repositories/Sql.cc
     ${CMAKE_CURRENT_SOURCE_DIR}/services/AdminService.cc
     ${CMAKE_CURRENT_SOURCE_DIR}/services/AuthService.cc
+    ${CMAKE_CURRENT_SOURCE_DIR}/services/OidcRpService.cc
     ${CMAKE_CURRENT_SOURCE_DIR}/services/ReportService.cc
     ${CMAKE_CURRENT_SOURCE_DIR}/services/UserService.cc
 )
@@ -71,6 +88,7 @@ target_include_directories(${PROJECT_NAME}
 target_link_libraries(${PROJECT_NAME}
     PRIVATE
         Drogon::Drogon
+        jwt-cpp::jwt-cpp
 )
 
 file(GLOB CONTROLLER_HEADERS CONFIGURE_DEPENDS