feat: update for Essentials 2 & remove deprecation warnings

BREAKING CHANGE: Drop 3-series support

.vscode/extensions.json

@@ -0,0 +1,9 @@
+{
+  "recommendations": [
+    "ms-dotnettools.vscode-dotnet-runtime",
+    "ms-dotnettools.csharp",
+    "ms-dotnettools.csdevkit",
+    "vivaxy.vscode-conventional-commits",
+    "mhutchie.git-graph"
+  ]
+}

.vscode/settings.json

@@ -0,0 +1,32 @@
+{
+  "workbench.colorCustomizations": {
+    "activityBar.activeBackground": "#8c57e5",
+    "activityBar.background": "#8c57e5",
+    "activityBar.foreground": "#e7e7e7",
+    "activityBar.inactiveForeground": "#e7e7e799",
+    "activityBarBadge.background": "#6e3411",
+    "activityBarBadge.foreground": "#e7e7e7",
+    "commandCenter.border": "#e7e7e799",
+    "sash.hoverBorder": "#8c57e5",
+    "statusBar.background": "#6e2bde",
+    "statusBar.foreground": "#e7e7e7",
+    "statusBarItem.hoverBackground": "#8c57e5",
+    "statusBarItem.remoteBackground": "#6e2bde",
+    "statusBarItem.remoteForeground": "#e7e7e7",
+    "titleBar.activeBackground": "#6e2bde",
+    "titleBar.activeForeground": "#e7e7e7",
+    "titleBar.inactiveBackground": "#6e2bde99",
+    "titleBar.inactiveForeground": "#e7e7e799"
+  },
+  "peacock.color": "#6e2bde",
+  "[csharp]": {
+    "editor.defaultFormatter": "ms-dotnettools.csharp",
+    "editor.formatOnSave": true,
+    "editor.formatOnSaveMode": "file"
+  },
+  "csharp.inlayHints.enableInlayHintsForImplicitObjectCreation": true,
+  "csharp.inlayHints.enableInlayHintsForImplicitVariableTypes": true,
+  "csharp.inlayHints.enableInlayHintsForLambdaParameterTypes": true,
+  "csharp.inlayHints.enableInlayHintsForTypes": true,
+  "dotnet.formatting.organizeImportsOnFormat": true
+}