Select, Mark and export selected table rows (#2420)

* first pass

* add a unmark all rows button

* enable shift click to select multiple rows

* support row selection backwards

* Styling for marked table rows

- CSS class applied;
- Export button label modified;

* working pause

* working multi select
tables are paused when user selects a row

* Layout improvements for table and control bar elements

- Table markup re-org'd;
- New .c-separator css class;
- Renamed .c-table__control-bar to .c-table-control-bar;
- Added label to Pause button;
- TODO: refine styling for table within frame in Layouts;

* Refined styling for c-button in an object frame

- More compact, better alignment, font sizing and padding;

* change logic to marking/selecting

* use command key to mark multiple

* Fixed regression errors in markup

* add isSelectable functionality

* make reviewer requested changes

* remove key from v-for in table.vue

src/plugins/telemetryTable/TelemetryTableViewProvider.js

@@ -67,7 +67,7 @@ define([
                                 table
                             },
                             el: element,
-                            template: '<table-component :isEditing="isEditing"></table-component>'
+                            template: '<table-component :isEditing="isEditing" :enableMarking="true"></table-component>'
                         });
                     },
                     onEditModeChange(isEditing) {