update: stages reviewd and to-be-reviewed

docs/roadmap/index.md

@@ -18,6 +18,7 @@ The eXpServer project comprises 24 stages, organized into 5 phases. Prior to the
 
 ✅ Reviewed
 🟡 To be reviewed
+🟣 Working on it
 🔴 Corrections
 
 ### Phase 0: Introduction to Linux socket programming
@@ -27,17 +28,17 @@ The eXpServer project comprises 24 stages, organized into 5 phases. Prior to the
 - ✅ [Stage 1: TCP Server](phase-0/stage-1)
 - ✅ [Stage 2: TCP Client](phase-0/stage-2)
 - ✅ [Stage 3: Linux epoll](phase-0/stage-3)
-- [Stage 4: UDP with Multi-threading](phase-0/stage-4)
-- 🔴 [Stage 5: TCP Proxy](phase-0/stage-5)
+- 🟡 [Stage 4: UDP with Multi-threading](phase-0/stage-4)
+- ✅ [Stage 5: TCP Proxy](phase-0/stage-5)
 
 ### Phase 1: Building the core of eXpServer by creating reusable modules
 
 - ✅ [Overview](phase-1/)
 - ✅ [Stage 6: Listener & Connection Modules](phase-1/stage-6)
-- 🔴 [Stage 7: Core & Loop Modules](phase-1/stage-7)
+- 🟡 [Stage 7: Core & Loop Modules](phase-1/stage-7)
 - 🟡 [Stage 8: Non-Blocking Sockets](phase-1/stage-8)
-- [Stage 9: epoll Edge Triggered](phase-1/stage-9)
-- [Stage 10: Pipe Module](phase-1/stage-10)
+- 🟡 [Stage 9: epoll Edge Triggered](phase-1/stage-9)
+- 🟣 [Stage 10: Pipe Module](phase-1/stage-10)
 - [Stage 11: Upstream Module](phase-1/stage-11)
 - [Stage 12: File Module](phase-1/stage-12)
 - [Stage 13: Session Module](phase-1/stage-13)