Add .idea and reorganize the dockerignore file alphabetically
-build-support/grapl-venv
+**/__pycache__
**/node_modules
+.git/**
+.idea
.pants.d
.pants.workdir.file_lock*
.pids
-**/__pycache__
-src/rust/target/**
.yarn
+build-support/grapl-venv
+src/rust/target/**
test_artifacts/**
-.git/**
