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>

Makefile

@@ -78,3 +78,7 @@ endef
 check-jq:
 	@printf "Checking if jq is installed... "
 	@command -v jq >/dev/null 2>&1 && { printf "OK\n"; } || { printf "FAILED. Please install jq to proceed.\n"; exit 1; }
+
+.PHONY: no_sonic
+no_sonic:
+	go build $(LDFLAGS) -tags "sonic_off"