chore: Suppress messages generated by CodeAnalyzers

[filzrev]

This PR aims to resolve some part of #9207 that can be fixed by Visual Studio's code fixer and handled with small code modifications.

Please review If there are changes that contains undesirable code changes.
Then I'll remove that changes.

ID	Commit	Description
CA1018	51bbfa8	CA1018: Mark attributes with AttributeUsageAttribute
CA1041	b614c9e	CA1041: Provide ObsoleteAttribute message
CA1050	c0f8515	CA1050: Declare types in namespaces
CA1507	4dc6426	CA1507: Use nameof in place of string
CA1822	591c6ed	CA1822: Mark members as static
CA1825	80d6c10	CA1825: Avoid zero-length array allocations
CA1827	a44bc8d	CA1827: Do not use Count()/LongCount() when Any() can be used
CA1829	e758c9f	CA1829: Use Length/Count property instead of Enumerable.Count method
CA1830	027807a	CA1830: Prefer strongly-typed Append and Insert method overloads on StringBuilder
CA1834	254d172	CA1834: Use StringBuilder.Append(char) for single character strings
CA1836	cac85d0	CA1836: Prefer IsEmpty over Count when available
CA1841	27c0251	CA1841: Prefer Dictionary Contains methods
CA1846	c784799	CA1846: Prefer AsSpan over Substring
CA1847	cf3f1d4	CA1847: Use string.Contains(char) instead of string.Contains(string) with single characters
CA1850	12383b5	CA1850: Prefer static HashData method over ComputeHash
CA2208	f7e57cd	CA2208: Instantiate argument exceptions correctly
CA2249	fbbb5a1	CA2249: Consider using String.Contains instead of String.IndexOf

ID	Commit	Description
IDE0001	99e2d8e	Simplify name (IDE0001)
IDE0002	36242f1	Simplify member access (IDE0002)
IDE0003	1df7925	this preferences (IDE0003)
IDE0004	073f675	Remove unnecessary cast (IDE0004)
IDE0005	0fe7159	Remove unnecessary using directives (IDE0005)
IDE0007/IDE0008	09181f4	'var' preferences (IDE0007 and IDE0008)
IDE0017	27c2b04	Use object initializers (IDE0017)
IDE0018	6e57632	Inline variable declaration (IDE0018)
IDE0019	3b86b47	Use pattern matching to avoid 'as' followed by a 'null' check (IDE0019)
IDE0029	9dd355c	Null check can be simplified (IDE0029)
IDE0031	22175e8	Use null propagation (IDE0031)
IDE0034	7523e16	Simplify 'default' expression (IDE0034)
IDE0036	65da193	Order modifiers (IDE0036)
IDE0038	5f19db3	Use pattern matching to avoid 'is' check followed by a cast (IDE0038)
IDE0039	8446077	Use local function instead of lambda (IDE0039)
IDE0041	2ce102a	Use 'is null' check (IDE0041)
IDE0044	a661ac1	Add readonly modifier (IDE0044)
IDE0049	1bf1a9b	Use language keywords instead of framework type names for type references (IDE0049)
IDE0054	99585f5	Use compound assignment (IDE0054 and IDE0074)
IDE0058	a425568	Remove unnecessary expression value (IDE0058) (For test projects)
IDE0059	f43c862	Remove unnecessary value assignment (IDE0059) (For test projects)
IDE0062	3597d7a	Make local function static (IDE0062)
IDE0065	c246e9e	'using' directive placement (IDE0065)
IDE0071	1668652	Simplify interpolation (IDE0071)
IDE0079	bcef7fc	Remove unnecessary suppression (IDE0079)
IDE0083	f302cc6	Use pattern matching (not operator) (IDE0083)
IDE0090	22e4c7a	Simplify new expression (IDE0090)
IDE0110	82511bf	Remove unnecessary discard (IDE0110)
IDE0161	e10d1d5	Namespace declaration preferences (IDE0160 and IDE0161)
IDE0200	5e3df45	Remove unnecessary lambda expression (IDE0200)
IDE1006	584c5ec	Naming rules for static/internal/private fields

TODO:
Following tasks will be handled by another PR.

• Suppress other code that require some code modification.
• Change resolved analyzer rules level from suggestion to warning.
• Try to using more strict analyzer level (Default -> Recommended)
• Apply C#12 specific code analyzer rules. (It needs be compiled when targeting .NET 6 SDK)

[codecov]

Codecov Report

Patch coverage is 67.63% of modified lines.

Files Changed	Coverage
...fx.Build.TagLevelRestApi/SplitRestApiToTagLevel.cs	ø
src/Docfx.App/Config/BuildJsonConfig.cs	ø
src/Docfx.App/Config/FileMetadataPairs.cs	ø
src/Docfx.App/Config/FileMetadataPairsConverter.cs	0.00%
src/Docfx.App/Docset.cs	0.00%
src/Docfx.App/Helpers/MetadataMerger.cs	ø
...andlers/Handlers/CompositeModelAttributeHandler.cs	ø
...tributeHandlers/Handlers/MarkdownContentHandler.cs	ø
...delAttributeHandlers/Handlers/UrlContentHandler.cs	ø
....Common/ModelAttributeHandlers/ReflectionHelper.cs	0.00%
... and 159 more

📢 Thoughts on this report? Let us know!.

[filzrev]

I've added a commit (33554b2) to resolve CA2011 message.
If this setter property called. It cause StackOverflow exception.

[yufeih]

Thank you @filzrev !