Tasks split out from umbrella ticket {T260816}
**Requirements**
For the sidebar:
[] The sidebar will display all parameters, not just those that have been added.
[] The icon to the left of the parameter names is removed and replaced with "+"/"-" buttons (same buttons & behaviour as in the TemplateWizard sidebar). These are used to add and remove parameters to the template, i.e. shown in or removed from the main input section on the right.
[] The puzzle icon to the left of tthe template names is removed and replaced with a "-" button, which can be used to remove the template (if there is content, the same warning message should show as {T260887}.)
[] When a new template is inserted, all required parameters are automatically added to the main input field. Required parameters cannot be removed, and are shown to be required and non-removable by having a checkmark icon to the left of the parameter name in the sidebar. the same warning message should show.(No +/- buttons)
[] When a new template is inserted, all required and suggested parameters are automatically added to the main input field (and shown as having been added with the "-" to the left of the parameter name in the sidebar). Optional parameters can be added using the side bar "+"/"-" buttons next to parameter names. Suggested parameters can also be removed there. Required parameters cannot be removed, and are shown to be required and non-removable by having a checkmark icon to the left of the parameter name in the sidebar.
[] The "+"/"-" buttons clickable area is restricted to the + and - minus symbol. Clicking on the name of the parameters allows the user to jump to this parameter in the main input area on the right, and the cursor is inserted into that parameter's field (current behaviour).
[] Remove trashcan from small toolbar at bottom lefright of VE sidebar.
[] Templates are added using the existing template button (puzzle piece) in the bottom left menu bar (after which a search bar appears at the bottom of the parameter list in the main input field. The template and it's parameters isare added to the sidebar, and a "-" button is added to the left of the template. Entire templates and their parameters can be removed via this button. Entire templates and their parameters can be removed via this button(Matches current behavior).
For the main input area of the dialog:
[] Remove the 'Add more information' dropdown at the bottom of the main input area, where parameters are currently added to templates. However, still allow this to appear at the bottom of the the main input area, if the user clicks the add parameter button in the bottom left menu bar.
[] Remove the trash icons which show next to the parameter name when it's "in focus" i.e. it's parameters are being displayed in the input area (as parameters can now be removed with the "-" button).
**Mocks**
{F32252113}4712}
{F32254710}
Required/suggested/optional subtitle: Base30
Check icon: Base30
Add icon: Accent50
Subtract icon: Red50
{F32252133}Icons all 20x20px