FEATURE request. Missing boost support inside Match statement.

At the moment there is no simple way to add boost directly into match statement. for example: `
{
"match": {
"name": {
"boost": 30.0,
"query": "Alex"
}
}
}
`

the only way to have boost for match statement is huge overhead: `
{
"bool": {
"boost": 30,
"must": [
{
"match": {
"name": {
"query": "Alex"
}
}
}
]
}
}
`

I propose to provide Boost method inside match statement to omit overcomplicating of queries.
Solution is to add `boost` field to `matchParams` struct, Boost method for it and testCase to
ensure that everything is mapped as expected.

Locate the matchParams struct and its existing parameter methods, then inspect the match query testCase mentioned in the issue. Confirm how fields are mapped in the generated query and verify that a match query with boost produces the requested JSON while existing match behavior remains unchanged.

Written by the indexing model from the issue text.