feat(css): add new utility-classes (#30186)

Issue number: internal

---------

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## What is the current behavior?
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## What is the new behavior?
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this PR. -->

Added new utility-classes related to:
- flex
- position
- size

## Does this introduce a breaking change?

- [ ] Yes
- [x] No

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## Other information

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screenshots of how the component looks before and after the change. -->

core/src/css/display.scss

@@ -37,3 +37,23 @@
     }
   }
 }
+
+// Size
+// --------------------------------------------------
+.ion-full-height {
+  height: 100% !important;
+}
+
+.ion-full-width {
+  width: 100% !important;
+}
+
+// Position
+// --------------------------------------------------
+.ion-position-absolute {
+  position: absolute !important;
+}
+
+.ion-position-relative {
+  position: relative !important;
+}

core/src/css/flex-utils.scss

@@ -94,3 +94,27 @@
 .ion-align-items-baseline {
   align-items: baseline !important;
 }
+
+// Flex Direction
+// --------------------------------------------------
+.ion-flex-direction-column {
+  flex-direction: column !important;
+}
+
+.ion-flex-direction-column-reverse {
+  flex-direction: column-reverse !important;
+}
+
+.ion-flex-direction-row {
+  flex-direction: row !important;
+}
+
+.ion-flex-direction-row-reverse {
+  flex-direction: row-reverse !important;
+}
+
+// Flex Container
+// --------------------------------------------------
+.ion-flex-1 {
+  flex: 1 !important;
+}