Plugin API: Extend API + Remove dependencies

[reactive-graph]

Plugin API: Extend API + Remove dependencies

[aschaeffer]

This change removes a lot of dependencies in every plugin. This results in smaller plugin binaries and faster plugin compilation times.

    Removing actix-codec v0.4.2
    Removing actix-http v3.0.0-rc.1
    Removing actix-macros v0.2.3
    Removing actix-router v0.5.0-rc.3
    Removing actix-rt v2.6.0
    Removing actix-server v2.0.0
    Removing actix-service v2.0.2
    Removing actix-utils v3.0.0
    Removing actix-web v4.0.0-rc.2
    Removing actix-web-codegen v0.5.0-rc.2
    Removing adler v1.0.2
    Removing ahash v0.7.6
    Removing alloc-no-stdlib v2.0.3
    Removing alloc-stdlib v0.2.1
    Removing async-attributes v1.1.2
    Removing base64 v0.13.0
    Removing block-buffer v0.10.1
    Removing brotli v3.3.3
    Removing brotli-decompressor v2.3.2
    Removing bytestring v1.0.0
    Removing convert_case v0.4.0
    Removing cookie v0.16.0
    Removing crypto-common v0.1.1
    Removing derive_more v0.99.17
    Removing digest v0.10.1
    Removing encoding_rs v0.8.30
    Removing firestorm v0.5.0
    Removing flate2 v1.0.22
    Removing form_urlencoded v1.0.1
    Removing h2 v0.3.11
    Removing httparse v1.5.1
    Removing httpdate v1.0.2
    Removing idna v0.2.3
    Removing jobserver v0.1.24
    Removing language-tags v0.3.2
    Removing local-channel v0.1.2
    Removing local-waker v0.1.2
    Removing matches v0.1.9
    Removing mime v0.3.16
    Removing miniz_oxide v0.4.4
    Removing mio v0.8.0
    Removing num_threads v0.1.3
    Removing paste v1.0.6
    Removing percent-encoding v2.1.0
    Removing ppv-lite86 v0.2.16
    Removing rand v0.8.4
    Removing rand_chacha v0.3.1
    Removing rand_core v0.6.3
    Removing rand_hc v0.3.1
    Removing serde_urlencoded v0.7.1
    Removing sha-1 v0.10.0
    Removing signal-hook-registry v1.4.0
    Removing time v0.3.7
    Removing time-macros v0.2.3
    Removing tinyvec v1.5.1
    Removing tinyvec_macros v0.1.0
    Removing tokio-util v0.6.9
    Removing tracing v0.1.30
    Removing tracing-core v0.1.22
    Removing unicode-bidi v0.3.7
    Removing unicode-normalization v0.1.19
    Removing url v2.2.2
    Removing zstd v0.9.2+zstd.1.5.1
    Removing zstd-safe v4.1.3+zstd.1.5.1
    Removing zstd-sys v1.6.2+zstd.1.5.1