Modify .gitignore and add IDE Rider settings

.gitignore

@@ -1,6 +1,6 @@
 # This .gitignore file should be placed at the root of your Unity project directory
 #
-# Get latest from https://github.com/github/gitignore/blob/master/Unity.gitignore
+# Get latest from https://github.com/github/gitignore/blob/main/Unity.gitignore
 #
 /[Ll]ibrary/
 /[Tt]emp/
@@ -14,8 +14,8 @@
 # They also could contain extremely sensitive data
 /[Mm]emoryCaptures/
 
-# Asset meta data should only be ignored when the corresponding asset is also ignored
-!/[Aa]ssets/**/*.meta
+# Recordings can get excessive in size
+/[Rr]ecordings/
 
 # Uncomment this line if you wish to ignore the asset store tools plugin
 # /[Aa]ssets/AssetStoreTools*
@@ -26,9 +26,6 @@
 # Visual Studio cache directory
 .vs/
 
-# JetBrains Rider cache directory
-.idea/
-
 # Gradle cache directory
 .gradle/
 
@@ -60,7 +57,9 @@ sysinfo.txt
 
 # Builds
 *.apk
+*.aab
 *.unitypackage
+*.app
 
 # Crashlytics generated file
 crashlytics-build.properties
@@ -70,8 +69,4 @@ crashlytics-build.properties
 
 # Temporary auto-generated Android Assets
 /[Aa]ssets/[Ss]treamingAssets/aa.meta
-/[Aa]ssets/[Ss]treamingAssets/aa/*
-
-# Exceptions
-!*.dll
-!*.obj
+/[Aa]ssets/[Ss]treamingAssets/aa/*