feat: add form dialog component (#428)

- Add formfield, input, select base (model)
- Add formfield component
- Add form-group service
- Add form-dialog component

Fixes: #427

src/app/shared/form-dialog/form-dialog.component.html

@@ -0,0 +1,14 @@
+<h1 mat-dialog-title>{{ data.title }}</h1>
+
+<div mat-dialog-content [formGroup]="form" [fxLayout]="layout.columns > 1 ? 'row wrap' : 'column'" fxLayout.lt-md="column" [fxLayoutGap]="(layout.columns > 1 ? layout.gap : 0) + '%'" fxLayoutGap.lt-md="0%">
+
+  <div *ngFor="let formfield of formfields" [fxFlex]="layout.flex + '%'" fxFlex.lt-md="100%">
+    <mifosx-formfield [formfield]="formfield" [form]="form" fxFlexFill></mifosx-formfield>
+  </div>
+
+</div>
+
+<mat-dialog-actions fxLayout="row" fxLayout.xs="column" fxLayoutAlign="center" fxLayoutGap="2%">
+  <button mat-raised-button mat-dialog-close>{{ layout.cancelButtonText }}</button>
+  <button mat-raised-button color="primary" [mat-dialog-close]="{ data: form }" [disabled]="!form.valid && form.pristine">{{ layout.addButtonText }}</button>
+</mat-dialog-actions>