Update clang config (#473)

* Update clang config to put H5E_BEGIN_TRY / H5E_END_TRY on separate lines, empty C++ methods on separate lines, understand that ALL_MEMBERS / UNIQUE_MEMBERS are foreach macros, and properly skip the 'config' directory in the find command without emiting a warning

* Committing clang-format changes

Co-authored-by: github-actions <41898282+github-actions[bot]@users.noreply.github.com>

.clang-format

@@ -7,6 +7,7 @@ AlignConsecutiveDeclarations: true
 AlignConsecutiveMacros: true
 #llvm10-11: AlignOperands:   true - Align
 #llvm11: AllowShortEnumsOnASingleLine: true
+AllowShortFunctionsOnASingleLine: None
 AlwaysBreakAfterReturnType: AllDefinitions
 # Can enable the following section when llvm 12.x is out
 #AttributeMacros:
@@ -32,6 +33,7 @@ BreakBeforeBraces: Stroustrup
 BreakAfterJavaFieldAnnotations: true
 BreakStringLiterals: true
 ColumnLimit:     110    # Update $max_trace_macro_line_len in bin/trace also
+ForEachMacros: ['ALL_MEMBERS', 'UNIQUE_MEMBERS']
 IncludeCategories:
   - Regex:           '^"(llvm|llvm-c|clang|clang-c)/'
     Priority:        3