Navigation refactoring, handling extension page params (#1651)

* decentralizing page url-params management -- PoC / tsc 4.1 random fixes

Signed-off-by: Roman <ixrock@gmail.com>

* fixes, tweak example-extension for demo

Signed-off-by: Roman <ixrock@gmail.com>

* lint fixes, revert tests

Signed-off-by: Roman <ixrock@gmail.com>

* removed occasional changes related to typescript 4.1

Signed-off-by: Roman <ixrock@gmail.com>

* updated example with 2 menu-items targeting same page with different params

Signed-off-by: Roman <ixrock@gmail.com>

* fix: merge page url chunks with native URL()-api, simplified default page-params registration

Signed-off-by: Roman <ixrock@gmail.com>

* fix: make lint happy

Signed-off-by: Roman <ixrock@gmail.com>

* fix: unit-tests

Signed-off-by: Roman <ixrock@gmail.com>

* renaming by jim's request: UrlParam => PageParam (type), createUrlParam => createPageParam (helper)

Signed-off-by: Roman <ixrock@gmail.com>

* fix: reverting NamespaceStore public-api breaking changes

Signed-off-by: Roman <ixrock@gmail.com>

* lint fix

Signed-off-by: Roman <ixrock@gmail.com>

* fine-tuning

Signed-off-by: Roman <ixrock@gmail.com>

* yes, lint always unhappy

Signed-off-by: Roman <ixrock@gmail.com>

* fix build

Signed-off-by: Roman <ixrock@gmail.com>

* small fixes

Signed-off-by: Roman <ixrock@gmail.com>

* fix merge-conflicts

Signed-off-by: Roman <ixrock@gmail.com>

* removed `isSystem` page-param's init field exposed to extensions-api

Signed-off-by: Roman <ixrock@gmail.com>

src/common/utils/index.ts

@@ -14,7 +14,6 @@ export * from "./splitArray";
 export * from "./saveToAppFiles";
 export * from "./singleton";
 export * from "./openExternal";
-export * from "./rectify-array";
 export * from "./downloadFile";
 export * from "./escapeRegExp";
 export * from "./tar";

src/common/utils/rectify-array.ts

@@ -1,8 +0,0 @@
-/**
- * rectify condences the single item or array of T type, to an array.
- * @param items either one item or an array of items
- * @returns a list of items
- */
-export function rectify<T>(items: T | T[]): T[] {
-  return Array.isArray(items) ? items : [items];
-}