chore: update gitignore and vscode settings for venv, clean up instructions

.vscode/settings.json

@@ -1,8 +1,11 @@
 {
-    "python.defaultInterpreterPath": "C:\\Users\\lukas\\anaconda3\\envs\\AniWorld\\python.exe",
+    "python.defaultInterpreterPath": "${workspaceFolder}/.venv/bin/python",
     "python.terminal.activateEnvironment": true,
-    "python.condaPath": "C:\\Users\\lukas\\anaconda3\\Scripts\\conda.exe",
     "python.terminal.activateEnvInCurrentTerminal": true,
+    "terminal.integrated.env.linux": {
+        "VIRTUAL_ENV": "${workspaceFolder}/.venv",
+        "PATH": "${workspaceFolder}/.venv/bin:${env:PATH}"
+    },
     "python.linting.enabled": true,
     "python.linting.flake8Enabled": true,
     "python.linting.pylintEnabled": true,