add: communities list page

TODO(ui): implement community creation, community viewing, community posting
TODO(ui): implement profile following, followers, and posts feed

crates/core/src/database/drivers/sql/create_memberships.sql

@@ -2,6 +2,6 @@ CREATE TABLE IF NOT EXISTS memberships (
     id INTEGER NOT NULL PRIMARY KEY,
     created INTEGER NOT NULL,
     owner INTEGER NOT NULL,
-    journal INTEGER NOT NULL,
+    community INTEGER NOT NULL,
     role INTEGER NOT NULL
 )

crates/core/src/database/drivers/sql/create_posts.sql

@@ -3,7 +3,7 @@ CREATE TABLE IF NOT EXISTS posts (
     created INTEGER NOT NULL,
     content TEXT NOT NULL,
     owner INTEGER NOT NULL,
-    journal INTEGER NOT NULL,
+    community INTEGER NOT NULL,
     context TEXT NOT NULL,
     replying_to INTEGER, -- the ID of the post this is a comment on... NULL means it isn't a reply
     -- likes