Report generator enhancement

[kumamiao]

This is a continuation of enhancement for #11

High priorities for PI#5:

• Change dropdown labels for document type teal.reporter#142
• Not display SRC in the final report by default teal.reporter#131
• Freeze Add Card button when adding card is in progress teal.reporter#137
• Editable Card names teal.reporter#94
• Adding table of content to report teal.reporter#130
• Collapsible Show R Code in the Previewer teal.reporter#85

Medium priorities for PI#5:

• What to do about plot dpi? teal.reporter#41
• Report previewer notifications teal.reporter#53
• custom yaml header fields in the Download Modules teal.reporter#26

Low priorities for PI#5:

• Previewer: track order change of cards teal.reporter#35
• Reporter: table resizing issue teal.reporter#147
• Inconsistent Card Titles teal.reporter#150

[donyunardi]

Move item items to insightsengineering/nestdevs-tasks#4
Closing