[Fuzz] Add fuzz testing for Hosts (#37516)

* add hostsfile fuzztests templates code

* modify  typos of hostsfile

* add hosts file

* add hosts fuzz to pipeline

* modify varify depjson rule

* fuzz validIPv4

* update  .net7 to .net 8

* add valid6/validhosts tests on hosts

* catch all exception

* update onefuzzconfig.json to add 3 test cases

* add fuzz writeasync tests and fill exception

* add writeasync onefuzz config

* add dll of writeasync in job dependencies

* for testing az

* change file

* use mock filesystem in hosts tests projct

* fix spell erro

* fix spell erro and change notations

* update test

* fix space erro in code

* install python

* update

* test

* use powershell

* remove unused dll in oneconfig.json


* change download artifacts

* update

* test

* add

* test

* merge

* az

* change

* update

* test cli

* add debug

* test large

* fix

* use templete

* remove pdb file filter in job test project

* fix x64 python install

* for testing

* add

* fix

* use 3.11.1

* change for test

* revert some testing file

* update the file name for spelling check

* use azure cli zip

* use aka.ms

* rename the zip file

* remove test artifactname

* add exception and job dependencies

* Remove the limitation of fuzzing only on hosts

* add fuzz readme

* remove unused changes and space

* fix x86 in sln and remove newtonsoft.json.dll in oneconfig.json

* readd wrapper.dll in oneconfig.json

* drop randomsplit when fuzz writeasync and remove unuseful package

---------

.github/actions/spell-check/allow/code.txt

@@ -263,6 +263,10 @@ onefuzz
 
 # NameInCode
 leilzh
+mengyuanchen
+
+# DllName
+testhost
 
 #Tools
-OIP
+OIP