chore: Update clang-format and prettier with pre-commit (#5709)

The change updates how clang-format is called in CI and locally, and adds prettier to the pre-commit hook. Proto files are now also formatted, while external files are excluded.

.clang-format

@@ -1,4 +1,20 @@
 ---
+BreakBeforeBraces: Custom
+BraceWrapping:
+  AfterClass: true
+  AfterControlStatement: true
+  AfterEnum: false
+  AfterFunction: true
+  AfterNamespace: false
+  AfterObjCDeclaration: true
+  AfterStruct: true
+  AfterUnion: true
+  BeforeCatch: true
+  BeforeElse: true
+  IndentBraces: false
+KeepEmptyLinesAtTheStartOfBlocks: false
+MaxEmptyLinesToKeep: 1
+---
 Language: Cpp
 AccessModifierOffset: -4
 AlignAfterOpenBracket: AlwaysBreak
@@ -18,20 +34,7 @@ AlwaysBreakBeforeMultilineStrings: true
 AlwaysBreakTemplateDeclarations: true
 BinPackArguments: false
 BinPackParameters: false
-BraceWrapping:
-  AfterClass: true
-  AfterControlStatement: true
-  AfterEnum: false
-  AfterFunction: true
-  AfterNamespace: false
-  AfterObjCDeclaration: true
-  AfterStruct: true
-  AfterUnion: true
-  BeforeCatch: true
-  BeforeElse: true
-  IndentBraces: false
 BreakBeforeBinaryOperators: false
-BreakBeforeBraces: Custom
 BreakBeforeTernaryOperators: true
 BreakConstructorInitializersBeforeComma: true
 ColumnLimit: 80
@@ -66,8 +69,6 @@ IndentFunctionDeclarationAfterType: false
 IndentRequiresClause: true
 IndentWidth: 4
 IndentWrappedFunctionNames: false
-KeepEmptyLinesAtTheStartOfBlocks: false
-MaxEmptyLinesToKeep: 1
 NamespaceIndentation: None
 ObjCSpaceAfterProperty: false
 ObjCSpaceBeforeProtocolList: false
@@ -96,11 +97,6 @@ TabWidth: 8
 UseTab: Never
 QualifierAlignment: Right
 ---
-Language: JavaScript
----
-Language: Json
-IndentWidth: 2
----
 Language: Proto
 BasedOnStyle: Google
 ColumnLimit: 0