all: Rework page store, add a dynacache to enable bigger data/content, and some general spring cleaning

There are some breaking changes in this commit, see gohugoio#11455.

Closes gohugoio#11455
Closes gohugoio#11549

Fixes gohugoio#10104
Fixes gohugoio#10380
Fixes gohugoio#10694
Fixes gohugoio#11439
Fixes gohugoio#11453
Fixes gohugoio#11457
Fixes gohugoio#11466
Fixes gohugoio#11540
Fixes gohugoio#11551
Fixes gohugoio#11556
Fixes gohugoio#11654
Fixes gohugoio#11661
Fixes gohugoio#11663
Fixes gohugoio#11664
Fixes gohugoio#11669
Fixes gohugoio#11671
Fixes gohugoio#11807
Fixes gohugoio#11808
Fixes gohugoio#11809
Fixes gohugoio#11815
Fixes gohugoio#11840
Fixes gohugoio#11860
Fixes gohugoio#11883
Fixes gohugoio#7425
Fixes gohugoio#7436
Fixes gohugoio#7437
Fixes gohugoio#7544
Fixes gohugoio#7882
Fixes gohugoio#8307
Fixes gohugoio#8498
Fixes gohugoio#8927
Fixes gohugoio#9192
Fixes gohugoio#9324
Fixes gohugoio#9343

Author: bep

.github/workflows/test.yml

@@ -87,6 +87,12 @@ jobs:
         curl -LJO "https://github.com/sass/dart-sass/releases/download/${env:SASS_VERSION}/dart-sass-${env:SASS_VERSION}-windows-x64.zip";
         Expand-Archive -Path "dart-sass-${env:SASS_VERSION}-windows-x64.zip" -DestinationPath .;
         echo  "$env:GITHUB_WORKSPACE/dart-sass/" | Out-File -FilePath $Env:GITHUB_PATH -Encoding utf-8 -Append
+    - if: matrix.os == 'ubuntu-latest'
+      name: Install staticcheck
+      run: go install honnef.co/go/tools/cmd/staticcheck@latest
+    - if: matrix.os == 'ubuntu-latest'
+      name: Run staticcheck
+      run: staticcheck ./...
     - if: matrix.os != 'windows-latest'
       name: Check
       run: |