Add Protein_has_Component table (#318)

Author: gfrn

schemas/ispyb/updates/2026_04_08_Protein_has_Component.sql

@@ -0,0 +1,19 @@
+INSERT IGNORE INTO SchemaStatus (scriptName, schemaStatus) VALUES ('2026_04_08_Protein_has_Component.sql', 'ONGOING');
+
+CREATE TABLE Protein_has_Component (
+    proteinHasComponentId int(11) unsigned PRIMARY KEY AUTO_INCREMENT,
+    proteinId int(10) unsigned NOT NULL COMMENT 'References Protein table',
+    componentId int(10) unsigned NOT NULL COMMENT 'References Component table',
+    CONSTRAINT `Protein_has_Component_fk_proteinId`
+      FOREIGN KEY (proteinId)
+        REFERENCES Protein (proteinId)
+          ON DELETE CASCADE
+          ON UPDATE CASCADE,
+    CONSTRAINT `Protein_has_Component_fk_componentId`
+      FOREIGN KEY (componentId)
+        REFERENCES Component (componentId)
+          ON DELETE CASCADE
+          ON UPDATE CASCADE
+) COMMENT = 'Which elements are contained inside a molecule';
+
+UPDATE SchemaStatus SET schemaStatus = 'DONE' WHERE scriptName = '2026_04_08_Protein_has_Component.sql';