Refactor interface for builder collections

[hpmellema]

Description of changes

Updates the builder methods created for lists and maps to:

1. Remove the remove* methods for lists and
2. Remove list add* method in favor of a varargs setter
3. Use Collection<T> for full list setter argument.

Example Generated list builder methods:

         public Builder list(Collection<String> list) {
            this.list = list != null ? new ArrayList<>(list) : null;
            return this;
        }

        public Builder addAllList(Collection<String> list) {
            if (this.list == null) {
                this.list = new ArrayList<>(list);
            } else {
                this.list.addAll(list);
            }
            return this;
        }

        public Builder list(String list) {
            if (this.list == null) {
                this.list = new ArrayList<>();
            }
            this.list.add(list);
            return this;
        }

        public Builder list(String... list) {
            if (this.list == null) {
                this.list = new ArrayList<>();
            }
            Collections.addAll(this.list, list);
            return this;
        }

Example Generated map builder methods:

         public Builder queryParams(Map<String, List<String>> queryParams) {
            this.queryParams = queryParams != null ? new LinkedHashMap<>(queryParams) : null;
            return this;
        }

        public Builder putAllQueryParams(Map<String, List<String>> queryParams) {
            if (this.queryParams == null) {
                this.queryParams = new LinkedHashMap<>(queryParams);
            } else {
                this.queryParams.putAll(queryParams);
            }
            return this;
        }

        public Builder putQueryParams(String key, List<String> value) {
           if (this.queryParams == null) {
               this.queryParams = new LinkedHashMap<>();
           }
           this.queryParams.put(key, value);
           return this;
        }

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