encoding/json: Add custom JSON package with build tag support for Sonic (#1623)

* tag optional sonic and allow full library conversion

* Add workflow and disallow arm and darwin usage

* Add basic hotswap benchmark

* linter: fix

* use bash

* linter: fix?

* Fix whoopsie, add to make file, also add mention in features list.

* test enforcement

* actually read documentation see if this works

* linter: fix

* linter: fix

* sonic: bump tagged version

* encoding/json: drop build tag arch and os filters

* encoding/json: consolidate tests

* encoding/json: log build tag usage

* rm superfluous builds

* glorious/nits: add template change and regen docs

* glorious/nits: update commentary on nolint directive

* glorious/nits: rm init func and log results in main.go

* Test to actually pull flag in

* linter: fix

* thrasher: nits

* gk: nits 4 goflags goooooooooo!

* gk: nits rn

* make sonic default json implementation

* screen 386

* linter: fix

* Add commentary

* glorious: nits Makefile not working

* gk: nits

* gk: nits whoops

* whoopsirino

* mention 32bit systems won't be sonic

* gk: super-duper nit of extremes

---------

Co-authored-by: Ryan O'Hara-Reid <ryan.oharareid@thrasher.io>

.github/workflows/tests.yml

@@ -13,22 +13,32 @@ jobs:
             goarch: amd64
             psql: true
             skip_wrapper_tests: false
+            sonic: true
           - os: ubuntu-latest
             goarch: 386
             psql: true
             skip_wrapper_tests: true
+            sonic: true # sonic is disabled for 386 this ensures fall back to legacy code
           - os: macos-latest
             goarch: amd64
             psql: true
             skip_wrapper_tests: true
+            sonic: true
           - os: macos-13 # beta
             goarch: amd64
             psql: true
             skip_wrapper_tests: true
+            sonic: true
           - os: windows-latest
             goarch: amd64
             psql: true
             skip_wrapper_tests: true
+            sonic: true
+          - os: ubuntu-latest
+            goarch: amd64
+            psql: true
+            skip_wrapper_tests: false
+            sonic: false
 
     runs-on: ${{ matrix.os }}
 
@@ -84,6 +94,13 @@ jobs:
         echo "CGO_ENABLED=1" >> $GITHUB_ENV
       shell: bash
 
+    - name: Set GOFLAGS
+      run: |
+        if [ "${{ matrix.sonic }}" = "false" ]; then
+          echo "GOFLAGS=${GOFLAGS} -tags=sonic_off" >> $GITHUB_ENV
+        fi
+      shell: bash
+
     - name: Test
       run: | # PGSERVICEFILE isn't supported by lib/pq and will cause a panic if set
         unset PGSERVICEFILE
@@ -169,4 +186,4 @@ jobs:
         cd web/
         npm install
         npm run lint
-        npm run build
+        npm run build