perf: avoids to create on every request a new object of args

[cesco69]

tsoa on every request create a new object of "args". Eg.:

app.get('/getInvalidTokens',
    async function UsersController_getInvalidTokens(request: ExRequest, response: ExResponse, next: any) {
    
    //    👇 
    const args: Record<string, TsoaRoute.ParameterSchema> = {
        req: {"in":"request","name":"req","required":true,"dataType":"object"},
    };

    // WARNING: This file was auto-generated with tsoa. Please do not modify it. Re-run tsoa to re-generate this file: https://github.com/lukeautry/tsoa

   let validatedArgs: any[] = [];
   try {
       //                                                👇 
       validatedArgs = templateService.getValidatedArgs({ args, request, response });

This PR create one time "args" object (out of api handler). Eg:

//    👇 
const argsUsersController_getInvalidTokens: Record<string, TsoaRoute.ParameterSchema> = {
    req: {"in":"request","name":"req","required":true,"dataType":"object"},
};
app.get('/getInvalidTokens',
    async function UsersController_getInvalidTokens(request: ExRequest, response: ExResponse, next: any) {

    // WARNING: This file was auto-generated with tsoa. Please do not modify it. Re-run tsoa to re-generate this file: https://github.com/lukeautry/tsoa

    let validatedArgs: any[] = [];
    try {
       //                                                    👇 
        validatedArgs = templateService.getValidatedArgs({ args: argsUsersController_getInvalidTokens, request, response });