Add exported query fragments and scoped coverage observations

grammar/QuixosCapability.g4

@@ -163,8 +163,10 @@ presentationDecl
   ;
 
 packageQuery
-  : QUERY identifier typeParameters? ID stringLiteral ROOT WORKSPACE? interfaceType
-    DOCUMENT stringLiteral OPERATION stringLiteral LBRACE queryClause* RBRACE
+  : QUERY FRAGMENT? identifier typeParameters? ID stringLiteral ROOT WORKSPACE? interfaceType
+    DOCUMENT stringLiteral
+    (OPERATION stringLiteral LBRACE queryClause* RBRACE
+    | FRAGMENT stringLiteral (OPERATION stringLiteral)? (LBRACE queryClause* RBRACE | SEMI))
   ;
 
 packageQuerySpecialization
@@ -175,6 +177,7 @@ queryClause
   : REPLICA SEMI
   | LOCAL FROM identifier SEMI
   | FRAGMENTS stringLiteral SEMI
+  | FRAGMENTS identifier DOT identifier (WITH LBRACE fragmentVariable* RBRACE)? SEMI
   | VIEW OBJECT? identifier AS interfaceType SEMI
   | MAX identifier INTEGER SEMI
   | ALLOW interfaceType DOT identifier identifier stringLiteral SEMI
@@ -182,6 +185,8 @@ queryClause
   | POLL INTEGER stringLiteral SEMI
   ;
 
+fragmentVariable : identifier TO identifier SEMI;
+
 packageOperationExport
   : OPERATION identifier typeParameters? ID stringLiteral COLON valueType ARROW valueType
     MODE operationMode executionClause? eventClause? RECEIVER receiverRequirement dependencyBlock? acceptanceClause? SEMI
@@ -482,6 +487,7 @@ identifier
   | ROOT
   | DOCUMENT
   | FRAGMENTS
+  | FRAGMENT
   | VIEW
   | MAX
   | ALLOW