Merge pull request 'readme' (#1) from readme into main

Reviewed-on: #1

readme.md

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+# mikoauth
+
+Auth pipeline for now: 
+```mermaid
+graph TD
+    A[Auth pipeline] --> B(somesubdomain.miko089.space)
+    B --> C[check auth]
+    C --> D(auth.miko089.space/?return_to=somesubdomain.miko089.space)
+    D --> E{is there a session?}
+    E -- yes --> F[add header with username and email]
+    F -- with necessary data --> B
+    E -- no --> G[window to authorize or register and then ask for a session on that page]
+    G --> H{session accepted?}
+    H -- yes --> D
+    H -- no --> S[401 end]
+```