Support views on plus datasources

[adrinr]

Description

Fixing view backend to support plus datasources. Datasource plus tables are stored in the ds document instead of a separate the table doc, so we need to update the documents accordingly

[nx-cloud]

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✅ Successfully ran 4 targets

• lerna run --stream test --stream --scope=@budibase/worker --scope=@budibase/server --since=origin/views-v2-frontend
• lerna run check:types --since=origin/views-v2-frontend
• lerna run build --stream
• lerna run build --stream --scope @budibase/server --scope @budibase/worker --scope @budibase/client --scope @budibase/backend-core

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[codecov-commenter]

Codecov Report

Merging #11615 (95d2926) into views-v2-frontend (f521179) will increase coverage by 27.29%.
Report is 4 commits behind head on views-v2-frontend.
The diff coverage is 94.73%.

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@@                  Coverage Diff                   @@
##           views-v2-frontend   #11615       +/-   ##
======================================================
+ Coverage              46.45%   73.74%   +27.29%     
======================================================
  Files                    164      321      +157     
  Lines                   5741    13488     +7747     
  Branches                1156     2804     +1648     
======================================================
+ Hits                    2667     9947     +7280     
- Misses                  2812     3309      +497     
+ Partials                 262      232       -30     

Files Changed	Coverage Δ
packages/server/src/api/controllers/datasource.ts	56.48% <ø> (ø)
packages/server/src/sdk/app/views/internal.ts	93.61% <93.61%> (ø)
packages/server/src/sdk/app/views/external.ts	94.44% <94.44%> (ø)
packages/server/src/sdk/app/views/index.ts	100.00% <100.00%> (ø)

... and 481 files with indirect coverage changes

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[shogunpurple]

LGTM!