Added policy path dropdown.

src/app/policies/policy-dropdown/policy-dropdown.component.html

@@ -0,0 +1,19 @@
+<mat-form-field>
+  <mat-label>Path</mat-label>
+  <input name="path"
+         matInput
+         type="text"
+         placeholder="Pick a policy..."
+         [formControl]="policyControl"
+         [matAutocomplete]="auto" />
+  <mat-autocomplete #auto="matAutocomplete">
+    @for (option of filteredPolicies | async; track option) {
+    <mat-option [value]="option">{{option}}</mat-option>
+    }
+  </mat-autocomplete>
+  @if (policyControl.invalid && (policyControl.dirty || policyControl.touched)) {
+  @if (policyControl.hasError('required')) {
+  <small class="error">This field is required.</small>
+  }
+  }
+</mat-form-field>