chore: remove plugin-update and plugin-help dependency @W-9565968@ (#334)

* chore: remove oclif dependency @W-9565968@

* chore: remove oclif plugin-update dependency @W-9565968@

* chore: add plugin-command-snapshot @W-9565968@

Author: jag-j

package.json

@@ -59,6 +59,7 @@
         "@lwc/jest-resolver": "^4.5.0",
         "@lwc/synthetic-shadow": "1.2.2",
         "@oclif/dev-cli": "^1.22.0",
+        "@oclif/plugin-command-snapshot": "^2.1.1",
         "@oclif/test": "^1.2.4",
         "@oclif/tslint": "^3.1.1",
         "@salesforce-ux/design-system": "^2.10.0",
@@ -113,10 +114,7 @@
         "@lwc/engine": "1.2.2",
         "@lwc/module-resolver": "1.2.2",
         "@lwc/wire-service": "1.2.2",
-        "@oclif/command": "^1.5.16",
         "@oclif/config": "^1.13.1",
-        "@oclif/plugin-help": "^2.2.0",
-        "@oclif/plugin-update": "^1.3.9",
         "@rollup/plugin-alias": "^3.0.1",
         "@salesforce/command": "^3.0.0",
         "@salesforce/core": "^2.5.1",
@@ -167,9 +165,9 @@
         },
         "commands": "./dist/cli/commands",
         "bin": "lwc-dev-server",
-        "plugins": [
+        "devPlugins": [
             "@oclif/plugin-help",
-            "@oclif/plugin-update"
+            "@oclif/plugin-command-snapshot"
         ]
     },
     "husky": {
@@ -192,4 +190,4 @@
             "path": "./node_modules/cz-conventional-changelog"
         }
     }
-}
+}