Update: Revamp gitignore logic from inclusive to exclusive

.gitignore

@@ -1,19 +1,12 @@
-/*
+*.iml
-!/.gitignore
+*.pyc
-!/build.gradle.kts
+*.swp
-!/settings.gradle.kts
+*.hprof
-!/CHANGELOG.md
+.gradle
-!/COPYING
+.idea
-!/DEVDOC.md
+.kotlin
-!/extra
+build/
-!/gradle
+local.properties
-!/gradle.properties
+src/main/jniLibs/
-!/gradlew
+release/
-!/gradlew.bat
+neo/
-!/metadata
-!/schemas
-!/proguard.pro
-!/README.md
-!/neo_banner.png
-!/src
-!/config