feat: Add simdjson to the stack.

This one is quite fast. If we ever need to do fast json parsing, this is
the one for it.

.bazelrc

@@ -671,6 +671,7 @@ build --per_file_copt='external/sdl2[:/]@-Wno-pedantic'
 build --per_file_copt='external/sdl2[:/]@-Wno-sign-compare'
 build --per_file_copt='external/sdl2[:/]@-Wno-tautological-value-range-compare'
 build --per_file_copt='external/sdl2[:/]@-Wno-unused-but-set-variable'
+build --per_file_copt='external/simdjson[:/]@-Wno-unused-member-function'
 build --per_file_copt='external/sqlcipher[:/]@-Wno-atomic-implicit-seq-cst'
 build --per_file_copt='external/sqlcipher[:/]@-Wno-cast-function-type-strict'
 build --per_file_copt='external/sqlcipher[:/]@-Wno-empty-translation-unit'

.clang-format

@@ -1,2 +1,84 @@
-BasedOnStyle: Google
+---
+# Language
+Standard: Cpp11
+
+# Indentation
+IndentWidth: 4
+ContinuationIndentWidth: 4
+AccessModifierOffset: -4
+IndentCaseLabels: false
+NamespaceIndentation: None
+
+# Spacing
+UseTab: Never
+SpaceBeforeParens: ControlStatements
+SpacesBeforeTrailingComments: 1
+SpaceInEmptyParentheses: false
+SpacesInAngles: false
+SpacesInParentheses: false
+SpacesInSquareBrackets: false
+SpacesInCStyleCastParentheses: false
+SpaceBeforeAssignmentOperators: true
+MaxEmptyLinesToKeep: 2
+
+# Alignment
+AlignAfterOpenBracket: Align
+AlignConsecutiveAssignments: false
+AlignConsecutiveDeclarations: false
+AlignEscapedNewlinesLeft: true
+AlignOperands: true
+AlignTrailingComments: true
+
+# Argument Packing
+BinPackArguments: true
+BinPackParameters: true
+
+# Break handling
 ColumnLimit: 100
+BreakBeforeBraces: Mozilla
+BreakBeforeBinaryOperators: NonAssignment
+BreakConstructorInitializersBeforeComma: true
+AlwaysBreakTemplateDeclarations: true
+ConstructorInitializerAllOnOneLineOrOnePerLine: false
+Cpp11BracedListStyle: true
+
+# Break penalities
+PenaltyBreakBeforeFirstCallParameter: 200
+PenaltyBreakComment: 300
+PenaltyBreakFirstLessLess: 120
+PenaltyBreakString: 1000
+PenaltyExcessCharacter: 5
+PenaltyReturnTypeOnItsOwnLine: 60
+
+# Includes
+SortIncludes: true
+IncludeIsMainRegex: '([-_](test|fuzz_test))?$'
+IncludeBlocks: Regroup
+IncludeCategories:
+  # Match local headers
+  - Regex: '^"[[:alnum:]_]+\.h"$'
+    Priority: 1
+  # Match project headers
+  - Regex: '^"[[:alnum:]_]+/.+\.h"$'
+    Priority: 2
+ # Match Qt headers
+  - Regex: '^<Q[[:alnum:]_/]+>$'
+    Priority: 3
+  # Match other headers
+  - Regex: '.*'
+    Priority: 4
+
+# Short blocks
+AllowShortBlocksOnASingleLine: false
+AllowShortCaseLabelsOnASingleLine: false
+AllowShortIfStatementsOnASingleLine: false
+AllowShortLoopsOnASingleLine: false
+AllowShortFunctionsOnASingleLine: Empty
+
+# Set pointer format
+DerivePointerAlignment: false
+PointerAlignment: Left
+
+# "const X" instead of "X const"
+QualifierAlignment: Left
+...

WORKSPACE

@@ -597,6 +597,14 @@ http_archive(
     urls = ["https://github.com/nlohmann/json/releases/download/v3.11.3/include.zip"],
 )
 
+# https://github.com/simdjson/simdjson/releases
+new_github_archive(
+    name = "simdjson",
+    integrity = "sha256-hl/62dOtM7ARIHS6iJ7pNNtT1hPq/GOS7A0aDJ5bAFc=",
+    repo = "simdjson/simdjson",
+    version = "v3.11.6",
+)
+
 # https://github.com/libunwind/libunwind/releases
 http_archive(
     name = "libunwind",

third_party/simdjson.BUILD

@@ -0,0 +1,9 @@
+load("@rules_cc//cc:defs.bzl", "cc_library")
+
+cc_library(
+    name = "simdjson",
+    srcs = ["singleheader/simdjson.cpp"],
+    hdrs = ["singleheader/simdjson.h"],
+    includes = ["singleheader"],
+    visibility = ["//visibility:public"],
+)