core: Create migration for metadata tables

.idea/dataSources.xml

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+<?xml version="1.0" encoding="UTF-8"?>
+<project version="4">
+  <component name="DataSourceManagerImpl" format="xml" multifile-model="true">
+    <data-source source="LOCAL" name="acrate" uuid="8258414e-095d-430b-a0a5-b48e72af23a9">
+      <driver-ref>postgresql</driver-ref>
+      <synchronize>true</synchronize>
+      <jdbc-driver>org.postgresql.Driver</jdbc-driver>
+      <jdbc-url>jdbc:postgresql:///acrate</jdbc-url>
+      <working-dir>$ProjectFileDir$</working-dir>
+    </data-source>
+  </component>
+</project>

.idea/sqldialects.xml

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+<?xml version="1.0" encoding="UTF-8"?>
+<project version="4">
+  <component name="SqlDialectMappings">
+    <file url="file://$PROJECT_DIR$/acrate-core/migrations/2024-11-14-031744_Add webfinger table/up.sql" dialect="GenericSQL" />
+  </component>
+</project>

acrate-core/migrations/2024-11-14-031744_Add webfinger table/down.sql

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+DROP FUNCTION get_meta_property;
+DROP FUNCTION get_meta_link;
+DROP FUNCTION get_meta_aliases;
+
+DROP TABLE meta_property;
+DROP TABLE meta_link_property;
+DROP TABLE meta_link;
+DROP TABLE meta_alias;

acrate-core/migrations/2024-11-14-031744_Add webfinger table/up.sql

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+CREATE TABLE meta_alias (
+	id UUID DEFAULT gen_random_uuid(),
+	pattern BPCHAR NOT NULL,
+	alias BPCHAR NOT NULL,
+	
+	CONSTRAINT unique_aliases UNIQUE (alias),
+	PRIMARY KEY (id)
+);
+
+CREATE TABLE meta_link (
+	id UUID DEFAULT gen_random_uuid(),
+	pattern BPCHAR NOT NULL,
+	rel BPCHAR NOT NULL,
+	type BPCHAR,
+	href BPCHAR,
+	
+	PRIMARY KEY (id)
+);
+
+CREATE TABLE meta_link_property (
+	id UUID DEFAULT gen_random_uuid(),
+	link UUID REFERENCES meta_link (id),
+	rel BPCHAR NOT NULL,
+	value BPCHAR,
+	
+	PRIMARY KEY (id)
+);
+
+CREATE TABLE meta_property (
+	id UUID DEFAULT gen_random_uuid(),
+	pattern BPCHAR NOT NULL,
+	value BPCHAR,
+	
+	PRIMARY KEY (id)
+);
+
+CREATE FUNCTION get_meta_aliases(BPCHAR) RETURNS SETOF meta_alias AS $$
+	SELECT * FROM meta_alias WHERE meta_alias.pattern ILIKE $1;
+$$ LANGUAGE SQL;
+
+CREATE FUNCTION get_meta_link(BPCHAR) RETURNS SETOF meta_link AS $$
+	SELECT * FROM meta_link WHERE meta_link.pattern ILIKE $1;
+$$ LANGUAGE SQL;
+
+CREATE FUNCTION get_meta_property(BPCHAR) RETURNS SETOF meta_property AS $$
+	SELECT * FROM meta_property WHERE meta_property.pattern ILIKE $1;
+$$ LANGUAGE SQL;

acrate-core/src/schema.rs

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+// @generated automatically by Diesel CLI.
+
+diesel::table! {
+    meta_alias (id) {
+        id -> Uuid,
+        pattern -> Bpchar,
+        alias -> Bpchar,
+    }
+}
+
+diesel::table! {
+    meta_link (id) {
+        id -> Uuid,
+        pattern -> Bpchar,
+        rel -> Bpchar,
+        #[sql_name = "type"]
+        type_ -> Nullable<Bpchar>,
+        href -> Nullable<Bpchar>,
+    }
+}
+
+diesel::table! {
+    meta_link_property (id) {
+        id -> Uuid,
+        link -> Nullable<Uuid>,
+        rel -> Bpchar,
+        value -> Nullable<Bpchar>,
+    }
+}
+
+diesel::table! {
+    meta_property (id) {
+        id -> Uuid,
+        pattern -> Bpchar,
+        value -> Nullable<Bpchar>,
+    }
+}
+
+diesel::joinable!(meta_link_property -> meta_link (link));
+
+diesel::allow_tables_to_appear_in_same_query!(
+    meta_alias,
+    meta_link,
+    meta_link_property,
+    meta_property,
+);