Add virtual scrolling card component

Add OpenAPI client(s)

src/app/openapi/param.ts

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+/**
+ * Standard parameter styles defined by OpenAPI spec
+ */
+export type StandardParamStyle =
+  | 'matrix'
+  | 'label'
+  | 'form'
+  | 'simple'
+  | 'spaceDelimited'
+  | 'pipeDelimited'
+  | 'deepObject'
+  ;
+
+/**
+ * The OpenAPI standard {@link StandardParamStyle}s may be extended by custom styles by the user.
+ */
+export type ParamStyle = StandardParamStyle | string;
+
+/**
+ * Standard parameter locations defined by OpenAPI spec
+ */
+export type ParamLocation = 'query' | 'header' | 'path' | 'cookie';
+
+/**
+ * Standard types as defined in <a href="https://swagger.io/specification/#data-types">OpenAPI Specification: Data Types</a>
+ */
+export type StandardDataType =
+  | "integer"
+  | "number"
+  | "boolean"
+  | "string"
+  | "object"
+  | "array"
+  ;
+
+/**
+ * Standard {@link DataType}s plus your own types/classes.
+ */
+export type DataType = StandardDataType | string;
+
+/**
+ * Standard formats as defined in <a href="https://swagger.io/specification/#data-types">OpenAPI Specification: Data Types</a>
+ */
+export type StandardDataFormat =
+  | "int32"
+  | "int64"
+  | "float"
+  | "double"
+  | "byte"
+  | "binary"
+  | "date"
+  | "date-time"
+  | "password"
+  ;
+
+export type DataFormat = StandardDataFormat | string;
+
+/**
+ * The parameter to encode.
+ */
+export interface Param {
+  name: string;
+  value: unknown;
+  in: ParamLocation;
+  style: ParamStyle,
+  explode: boolean;
+  dataType: DataType;
+  dataFormat: DataFormat | undefined;
+}