Allow User to set log directory

If User doesn't specify, use a directory that should be unique enough to not cause overlap of logs for users running multiple sessions

plugin/coc-pses.vim

@@ -2,6 +2,13 @@ let s:vimscript_dir = expand('<sfile>:p:h')
 let g:pses_dir      = resolve(expand(s:vimscript_dir . '/../PowerShellEditorServices/PowerShellEditorServices'))
 let g:pses_script   = g:pses_dir . "/Start-EditorServices.ps1"
 
+" Let the user specify the log directory for PSES.
+" If the user doesn't specify a location, use the root of vov-pses in a .pses
+" directory.
+if(!exists("g:pses_logs_dir"))
+    let g:pses_logs_dir      = resolve(expand(s:vimscript_dir . '/../.pses/logs/' . strftime('%Y%m%d') . '-' . getpid()))
+endif
+
 if(!exists("g:pses_powershell_executable"))
     let g:pses_powershell_executable = "powershell"
     if(executable("pwsh"))
@@ -23,12 +30,12 @@ function! s:PSESSetup ()
             \       "-HostName", "coc.vim",
             \       "-HostProfileId", "0",
             \       "-HostVersion", "2.0.0",
-            \       "-LogPath", g:pses_dir . "/log.txt",
+            \       "-LogPath", g:pses_logs_dir . "/log.txt",
             \       "-LogLevel", "Diagnostic",
             \       "-FeatureFlags", "[]",
             \       "-BundledModulesPath", g:pses_dir . "/../",
             \       "-Stdio",
-            \       "-SessionDetailsPath", g:pses_dir . "/session"
+            \       "-SessionDetailsPath", g:pses_logs_dir . "/session"
             \     ]
             \    }
             \  }