feat: hack db connection modal ctabtns

[pkdotson]

SUMMARY

This pr creates two cta buttons to create dataset or to go to sqllab in the db connection modal after a user connects their db

BEFORE/AFTER SCREENSHOTS OR ANIMATED GIF

after

Screen.Recording.2022-05-11.at.1.21.32.PM.mov

TESTING INSTRUCTIONS

Go to database connection modal and connect a db. There should be two cta button that take you to create dataset or to sql lab.

ADDITIONAL INFORMATION

• Has associated issue:
• Required feature flags:
• Changes UI
• Includes DB Migration (follow approval process in SIP-59)
  • Migration is atomic, supports rollback & is backwards-compatible
  • Confirm DB migration upgrade and downgrade tested
  • Runtime estimates and downtime expectations provided
• Introduces new feature or API
• Removes existing feature or API

[codecov]

Codecov Report

Merging #20017 (6f98cc2) into master (9cf9f97) will increase coverage by 0.08%.
The diff coverage is 50.00%.

@@            Coverage Diff             @@
##           master   #20017      +/-   ##
==========================================
+ Coverage   66.35%   66.44%   +0.08%     
==========================================
  Files        1712     1740      +28     
  Lines       64056    64848     +792     
  Branches     6741     6938     +197     
==========================================
+ Hits        42504    43086     +582     
- Misses      19841    20004     +163     
- Partials     1711     1758      +47     

Flag	Coverage Δ
javascript	51.81% <50.00%> (+0.51%)	⬆️

Flags with carried forward coverage won't be shown. Click here to find out more.

Impacted Files	Coverage Δ
...frontend/src/components/DatabaseSelector/index.tsx	88.88% <ø> (ø)
superset-frontend/src/utils/localStorageHelpers.ts	90.00% <ø> (ø)
...s/CRUD/data/database/DatabaseModal/ModalHeader.tsx	66.66% <ø> (ø)
...c/views/CRUD/data/database/DatabaseModal/styles.ts	76.47% <ø> (-0.23%)	⬇️
...c/views/CRUD/data/database/DatabaseModal/index.tsx	31.77% <25.00%> (-0.93%)	⬇️
...ontend/src/views/CRUD/data/dataset/DatasetList.tsx	56.20% <60.00%> (+0.89%)	⬆️
...d/src/SqlLab/components/SqlEditorLeftBar/index.tsx	49.20% <62.50%> (+1.93%)	⬆️
...nd/src/views/CRUD/data/dataset/AddDatasetModal.tsx	42.50% <66.66%> (+0.83%)	⬆️
...et-frontend/src/components/TableSelector/index.tsx	76.08% <100.00%> (+0.53%)	⬆️
...oard/components/gridComponents/new/NewMarkdown.jsx	0.00% <0.00%> (-100.00%)	⬇️
... and 289 more

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[yousoph]

/testenv up

[github-actions]

@yousoph Ephemeral environment spinning up at http://34.218.80.71:8080. Credentials are admin/admin. Please allow several minutes for bootstrapping and startup.

[yousoph]

@jess-dillard can you see if the styling on the second step of the db connection screen looks good to you?

[ghost]

@pkdotson @yousoph Let's make some styling changes. Make a quick Figma mock here (top part of modal only). Note there are some text tweaks as well.

[pkdotson]

@pkdotson @yousoph Let's make some styling changes. Make a quick Figma mock here (top part of modal only). Note there are some text tweaks as well.

done

[github-actions]

Ephemeral environment shutdown and build artifacts deleted.