### Description

The [Terms Set Query](https://www.elastic.co/guide/en/elasticsearch/reference/current/query-dsl-terms-set-query.html) lets you match documents that have some minimum number of matches to a given array of input search terms. The minimum number of matches however can only be specified by referencing another field on the document or by using a script.  

I have a use case where I need to be able to specify the minimum number of terms to match at query time, agnostic of documents so the `minimum_should_match_field` is not useful. Further, since I know I need to match a minimum of exactly, say, 3 terms, it seems like overkill to have to enable and using scripting (as in the use of `minimum_should_match_script`) to just return a static number.

Today as an alternative, I'm instead using a Bool Query with a `minimum_should_match` accepting my explicit number and all of my input search terms mapping to an array of individual `{ term: { field: value } }` entries in the `should` array of the bool. However, this is very json-inefficient, especially when I am making queries with many (possibly thousands) of terms in my query.

I was so happy to find the Terms Set query as a leaner, more specialized alternative to my massive `should` array but was then very surprised that there was no query-time input for the minimum match count (outside scripting).

**TL;DR:** Terms Set query should support a third possible top-level parameter for specifying the minimum number of terms to match which simply accepts a number, like `minimum_should_match`
server/src/main/java/org/elasticsearch/index/query/TermsSetQueryBuilder.java
}
    public static TermsSetQueryBuilder fromXContent(XContentParser parser) throws IOException {
        XContentParser.Token token = parser.nextToken();
        if (token != XContentParser.Token.FIELD_NAME) {
            throw new ParsingException(parser.getTokenLocation(), "[" + NAME + "] unknown token [" + token + "]");
        }
        String currentFieldName = parser.currentName();
        String fieldName = currentFieldName;
        token = parser.nextToken();
        if (token != XContentParser.Token.START_OBJECT) {
            throw new ParsingException(parser.getTokenLocation(), "[" + NAME + "] unknown token [" + token + "]");
        }
        List<Object> values = new ArrayList<>();
        String minimumShouldMatchField = null;
        Script minimumShouldMatchScript = null;
        String queryName = null;
        float boost = AbstractQueryBuilder.DEFAULT_BOOST;
        while ((token = parser.nextToken()) != XContentParser.Token.END_OBJECT) {
            if (token == XContentParser.Token.FIELD_NAME) {
                currentFieldName = parser.currentName();
            } else if (token == XContentParser.Token.START_ARRAY) {
                if (TERMS_FIELD.match(currentFieldName, parser.getDeprecationHandler())) {
                    values = TermsQueryBuilder.parseValues(parser);
                } else {
                    throw new ParsingException(
                        parser.getTokenLocation(),
                        "[" + NAME + "] query does not support [" + currentFieldName + "]"
                    );
                }
            } else if (token == XContentParser.Token.START_OBJECT) {