Improved ESLint configuration, integrated spellcheck and error fixes (#8931)

* integrate cspell with eslint, improved configuration

* core: fix linting errors

* core: fix lint warnings

* content: lint fixes

* process service lint fixes

* lint: process services cloud

* lint: insights

* lint: extensions

* [ci:force] lint: cli fixes

* [ci:force] comment out dead code

* [ci:force] exclude dead code

* fix code and tests

* rollback some changes

* fix testing lib

* fix demo shell

* minor lint warning fixes

* minor lint fixes

* fix process services

lib/cli/scripts/plugins/process-automation-health.ts

@@ -32,7 +32,7 @@ export class ProcessAutomationHealth {
             const url = `${this.plugInInfo.host}/${this.plugInInfo.appName}/ui/${this.plugInInfo.uiName}/app.config.json`;
             const appConfig = await this.config.getAppConfig(url);
             let isEnabled = true;
-            if (appConfig && appConfig.plugins && appConfig.plugins[this.plugInInfo.name]) {
+            if (appConfig?.plugins?.[this.plugInInfo.name]) {
                 logger.info(`The plugin ${this.plugInInfo.name} has been correctly configured in app.config.json`);
             } else {
                 this.logConfigurationError();