Start basic CLI framework

cli/src/directive/Directive.ts

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+import AppClass from '../../../lib/src/lifecycle/AppClass.ts'
+import {Logging} from '../../../lib/src/service/logging/Logging.ts'
+
+export abstract class Directive extends AppClass {
+    public abstract readonly keyword: string
+    public abstract readonly help: string
+
+    static options() {
+        return []
+    }
+
+    public abstract invoke(): any
+
+    success(message: any) {
+        this.make(Logging).success(message, true)
+    }
+
+    error(message: any) {
+        this.make(Logging).error(message, true)
+    }
+
+    warn(message: any) {
+        this.make(Logging).warn(message, true)
+    }
+
+    info(message: any) {
+        this.make(Logging).info(message, true)
+    }
+
+    debug(message: any) {
+        this.make(Logging).debug(message, true)
+    }
+
+    verbose(message: any) {
+        this.make(Logging).verbose(message, true)
+    }
+}

cli/src/directive/UsageDirective.ts

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+import {Directive} from './Directive.ts'
+
+export class UsageDirective extends Directive {
+    public readonly keyword = 'help'
+    public readonly help = 'Display usage information'
+
+    public async invoke() {
+        console.log('Hello, from Daton CLI.')
+    }
+}