chore: Remove .idea directories from the sample apps (#153)

Co-authored-by: Matt Creaser <mattcreaser@gmail.com>

Author: vincetran

.gitignore

@@ -38,15 +38,15 @@ captures/
 # IntelliJ
 *.iml
 **/*.iml
-.idea/workspace.xml
-.idea/tasks.xml
-.idea/gradle.xml
-.idea/assetWizardSettings.xml
-.idea/dictionaries
-.idea/libraries
-.idea/caches
-.idea/misc.xml
-.idea/**
+**/.idea/workspace.xml
+**/.idea/tasks.xml
+**/.idea/gradle.xml
+**/.idea/assetWizardSettings.xml
+**/.idea/dictionaries
+**/.idea/libraries
+**/.idea/caches
+**/.idea/misc.xml
+**/.idea/**
 
 # VIM
 *.swp