Update ADR-003 implementation diagram to include tar file loading and local registry features (#15)

* Initial plan

* Update ADR-003 implementation diagram to include tar file loading and local registry features

Co-authored-by: j143 <53068787+j143@users.noreply.github.com>

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Co-authored-by: copilot-swe-agent[bot] <198982749+Copilot@users.noreply.github.com>
Co-authored-by: j143 <53068787+j143@users.noreply.github.com>
Co-authored-by: Janardhan Pulivarthi <j143@protonmail.com>

Author: Copilot

adr-003-docker-image-download.md

@@ -58,7 +58,9 @@ The following diagram illustrates the current stage of implementation and the en
 ```mermaid
 graph TD
     A[Simulated Fetching Logic]:::implemented --> B[Registry Interface Implementation]:::implemented
-    B --> C[Layer Downloading]:::implemented
+    A --> H[Load Images from .tar Files]:::implemented
+    B --> I[Local Registry Downloads]:::implemented
+    B --> C[Layer Downloading]:::inprogress
     C --> D[Full Registry Authentication]:::notstarted
     D --> E[Layer Verification]:::notstarted
     E --> F[Layer Extraction]:::notstarted