[core] Batch small changes

[oliviertassinari]

• [core] Run ImageOptim 4b8bb3e: A recurrent chore.
• [docs] TypeScript over alternative wordings 1c65c28: Respect the case of the official name: https://www.typescriptlang.org/.
• [docs] Link brand icons d7a49a0: Turns out, it can be quite useful.
• [docs] Start to update the roadmap, remove legacy content ac78312: The roadmap is 17 months old. The last major update of the roadmap was in [docs] Update the ROADMAP #14923. The changes are meant as a first iteration, clean up some of the problems we have solved.
• [core] Fix sorting 3cbc74c: Follow-up on [core] Lint with typescript-eslint parser #21758 (comment).
• [core] Sort package.json to match yarn add default sort 7300642: I have found this when trying to add a new dependency in oliviertassinari@9a3c143.
• [TreeView] Fix inconsistencies b623886: The changes are meant to match the convention of the other components, should be harmless cc @joshwooding.
• [framer] Optimize search results 6af6ce9: Put [framer] Fix Avatar imageFile & imageUrl #21887 (comment) in motion.

This time, I had to split the work into 2 other PRs:

• [core] Batch small changes mui-x#104
• [core] Batch small changes material-ui-pickers#2034

[mui-pr-bot]

Details of bundle changes

Generated by 🚫 dangerJS against 30b8145

[mbrookes]

This symbols says "new" to me.

Suggested change

	- ⭐️ We will make some of the features available in [Material-UI X](https://github.com/mui-org/material-ui-x) (non-MIT)
	- 💵 We will make some of the features available in [Material-UI X](https://github.com/mui-org/material-ui-x) (non-MIT)

Or:
🔐 💳 💎 📦 ?

[oliviertassinari]

Or ✨(airtable), or ⚡ (can't recall in which product I have seen this one). I think that it should communicate the "advanced" as well as it's "different" meaning.

[mbrookes]

✨ - sparkly and new?
⚡ - possibly, although does it suggest "paid" to you?
💎 - says "premium", and is associated with value. Could be an option, although not to be confused with Diamond Sponsors.

[oliviertassinari]

I would vote for ⚡, but not strong preference. I think that we could ask the designers to come with something to differentiate the different pages in the left side navigation as well on the overall layout.