chore: fvm and node dependency updates and pinning (#9203)

* chore(mobile): ignore .fvm directory and update .fvmrc version

* chore(cli): add nvm and volta node versioning files/config

* chore(docs): add nvm and volta node versioning files/config, bump to node v20

* chore(server): add nvm node versioning file

* chore(web): add nvm and volta node versioning files/config

* chore(e2e): add nvm and volta node versioning files/config

mobile/.fvm/fvm_config.json

@@ -1,4 +0,0 @@
-{
-  "flutterSdkVersion": "3.19.3",
-  "flavors": {}
-}

mobile/.fvmrc

@@ -1,3 +1,3 @@
 {
-  "flutter": "3.16.9"
+  "flutter": "3.19.3"
 }

mobile/.gitignore

@@ -54,5 +54,5 @@ default.isar
 default.isar.lock
 libisar.so
 
-# FVM Version Cache
-.fvm/flutter_sdk
+# FVM Version
+.fvm/

mobile/.vscode/settings.json

@@ -1,5 +1,5 @@
 {
-  "dart.flutterSdkPath": ".fvm\\versions\\3.16.9",
+  "dart.flutterSdkPath": ".fvm/versions/3.19.3",
   "search.exclude": {
     "**/.fvm": true
   },