### 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
}
    @Override
    protected boolean doEquals(TermsSetQueryBuilder other) {
        return Objects.equals(fieldName, other.fieldName)
            && Objects.equals(values, other.values)
            && Objects.equals(minimumShouldMatchField, other.minimumShouldMatchField)
            && Objects.equals(minimumShouldMatchScript, other.minimumShouldMatchScript);
    }
    @Override
    protected int doHashCode() {
        return Objects.hash(fieldName, values, minimumShouldMatchField, minimumShouldMatchScript);
    }
    @Override
    public String getWriteableName() {
        return NAME;
    }
    @Override
    protected void doXContent(XContentBuilder builder, Params params) throws IOException {
        builder.startObject(NAME);
        builder.startObject(fieldName);
        builder.field(TERMS_FIELD.getPreferredName(), convertBack(values));
        if (minimumShouldMatchField != null) {
            builder.field(MINIMUM_SHOULD_MATCH_FIELD.getPreferredName(), minimumShouldMatchField);
        }
        if (minimumShouldMatchScript != null) {
            builder.field(MINIMUM_SHOULD_MATCH_SCRIPT.getPreferredName(), minimumShouldMatchScript);
        }
        printBoostAndQueryName(builder);
        builder.endObject();
        builder.endObject();