docs(readme): init component readme.md docs

packages/core/src/components/loading/readme.md

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+# ion-loading
+
+
+
+<!-- Auto Generated Below -->
+
+
+## Properties
+
+#### content
+
+string
+
+
+#### cssClass
+
+string
+
+
+#### dismissOnPageChange
+
+boolean
+
+
+#### duration
+
+number
+
+
+#### enterAnimation
+
+any
+
+
+#### exitAnimation
+
+any
+
+
+#### loadingId
+
+string
+
+
+#### showBackdrop
+
+boolean
+
+
+## Attributes
+
+#### content
+
+string
+
+
+#### cssClass
+
+string
+
+
+#### dismissOnPageChange
+
+boolean
+
+
+#### duration
+
+number
+
+
+#### enterAnimation
+
+any
+
+
+#### exitAnimation
+
+any
+
+
+#### loadingId
+
+string
+
+
+#### showBackdrop
+
+boolean
+
+
+## Events
+
+#### ionLoadingDidDismiss
+
+
+#### ionLoadingDidLoad
+
+
+#### ionLoadingDidPresent
+
+
+#### ionLoadingDidUnload
+
+
+#### ionLoadingWillDismiss
+
+
+#### ionLoadingWillPresent
+
+
+
+----------------------------------------------
+
+*Built by [StencilJS](https://stenciljs.com/)*