fix: ignore missing imports for all optional packages in pyright

Signed-off-by: Luca Muscariello <muscariello@ieee.org>

Author: muscariello

src/a2a/client/transports/grpc.py

@@ -4,7 +4,7 @@
 
 
 try:
-    import grpc
+    import grpc  # type: ignore[reportMissingModuleSource, reportMissingImports]
 except ImportError as e:
     raise ImportError(
         'A2AGrpcClient requires grpcio and grpcio-tools to be installed. '

src/a2a/server/request_handlers/grpc_handler.py

@@ -7,10 +7,10 @@
 
 
 try:
-    import grpc
-    import grpc.aio
+    import grpc  # type: ignore[reportMissingModuleSource]
+    import grpc.aio  # type: ignore[reportMissingModuleSource]
 
-    from grpc.aio import Metadata
+    from grpc.aio import Metadata  # type: ignore[reportMissingModuleSource]
 except ImportError as e:
     raise ImportError(
         'GrpcHandler requires grpcio and grpcio-tools to be installed. '

src/a2a/server/tasks/database_push_notification_config_store.py

@@ -8,17 +8,19 @@
 
 
 try:
-    from sqlalchemy import (
+    from sqlalchemy import (  # type: ignore[reportMissingImports]
         Table,
         delete,
         select,
     )
-    from sqlalchemy.ext.asyncio import (
+    from sqlalchemy.ext.asyncio import (  # type: ignore[reportMissingImports]
         AsyncEngine,
         AsyncSession,
         async_sessionmaker,
     )
-    from sqlalchemy.orm import class_mapper
+    from sqlalchemy.orm import (
+        class_mapper,  # type: ignore[reportMissingImports]
+    )
 except ImportError as e:
     raise ImportError(
         'DatabasePushNotificationConfigStore requires SQLAlchemy and a database driver. '
@@ -41,7 +43,7 @@
 
 
 if TYPE_CHECKING:
-    from cryptography.fernet import Fernet
+    from cryptography.fernet import Fernet  # type: ignore[reportMissingImports]
 
 
 logger = logging.getLogger(__name__)

src/a2a/server/tasks/database_task_store.py

@@ -4,13 +4,19 @@
 
 
 try:
-    from sqlalchemy import Table, delete, select
-    from sqlalchemy.ext.asyncio import (
+    from sqlalchemy import (  # type: ignore[reportMissingImports]
+        Table,
+        delete,
+        select,
+    )
+    from sqlalchemy.ext.asyncio import (  # type: ignore[reportMissingImports]
         AsyncEngine,
         AsyncSession,
         async_sessionmaker,
     )
-    from sqlalchemy.orm import class_mapper
+    from sqlalchemy.orm import (
+        class_mapper,  # type: ignore[reportMissingImports]
+    )
 except ImportError as e:
     raise ImportError(
         'DatabaseTaskStore requires SQLAlchemy and a database driver. '

src/a2a/utils/telemetry.py

@@ -65,16 +65,22 @@ def internal_method(self):
 
 
 if TYPE_CHECKING:
-    from opentelemetry.trace import SpanKind as SpanKindType
+    from opentelemetry.trace import (
+        SpanKind as SpanKindType,  # type: ignore[reportMissingImports]
+    )
 else:
     SpanKindType = object
 
 logger = logging.getLogger(__name__)
 
 try:
-    from opentelemetry import trace
-    from opentelemetry.trace import SpanKind as _SpanKind
-    from opentelemetry.trace import StatusCode
+    from opentelemetry import trace  # type: ignore[reportMissingImports]
+    from opentelemetry.trace import (  # type: ignore[reportMissingImports]
+        SpanKind as _SpanKind,
+    )
+    from opentelemetry.trace import (  # type: ignore[reportMissingImports]
+        StatusCode,
+    )
 
 except ImportError:
     logger.debug(